diff --git a/intern/mikktspace/mikktspace.c b/intern/mikktspace/mikktspace.c
index 8d51816b132..0342ae0146f 100644
--- a/intern/mikktspace/mikktspace.c
+++ b/intern/mikktspace/mikktspace.c
@@ -579,13 +579,16 @@ static void MergeVertsFast(int piTriList_in_and_out[], STmpVert pTmpVert[], cons
 {
 	// make bbox
 	int c=0, l=0, channel=0;
-	float fvMin[3] = {INFINITY, INFINITY, INFINITY};
-	float fvMax[3] = {-INFINITY, -INFINITY, -INFINITY};
+	float fvMin[3], fvMax[3];
 	float dx=0, dy=0, dz=0, fSep=0;
-	for (l=iL_in; l<=iR_in; l++)
-		for (c=0; c<3; c++)
+	for (c=0; c<3; c++)
+	{	fvMin[c]=pTmpVert[iL_in].vert[c]; fvMax[c]=fvMin[c];	}
+	for (l=(iL_in+1); l<=iR_in; l++) {
+		for (c=0; c<3; c++) {
 			if (fvMin[c]>pTmpVert[l].vert[c]) fvMin[c]=pTmpVert[l].vert[c];
-			else if (fvMax[c]<pTmpVert[l].vert[c]) fvMax[c]=pTmpVert[l].vert[c];
+			if (fvMax[c]<pTmpVert[l].vert[c]) fvMax[c]=pTmpVert[l].vert[c];
+		}
+	}
 
 	dx = fvMax[0]-fvMin[0];
 	dy = fvMax[1]-fvMin[1];
diff --git a/make.bat b/make.bat
index 022075805e4..11c1ff00a3b 100644
--- a/make.bat
+++ b/make.bat
@@ -126,24 +126,12 @@ set BUILD_DIR=%BUILD_DIR%_%TARGET%_%BUILD_ARCH%_vc%BUILD_VS_VER%_%BUILD_TYPE%
 
 if "%target%"=="Release" (
 		rem for vc12 check for both cuda 7.5 and 8 
-		if "%BUILD_VS_VER%"=="12" (
-			if "%CUDA_PATH_V7_5%"=="" (
-				echo Cuda 7.5 Not found, aborting!
-				goto EOF
-			)
-		)
-		if "%CUDA_PATH_V8_0%"=="" (
-			echo Cuda 8.0 Not found, aborting!
+		if "%CUDA_PATH%"=="" (
+			echo Cuda Not found, aborting!
 			goto EOF
 		)
-		if "%BUILD_VS_VER%"=="12" (
-					set BUILD_CMAKE_ARGS=%BUILD_CMAKE_ARGS% ^
-					-C"%BLENDER_DIR%\build_files\cmake\config\blender_release.cmake" -DCUDA_NVCC_EXECUTABLE:FILEPATH=%CUDA_PATH_V7_5%/bin/nvcc.exe -DCUDA_NVCC8_EXECUTABLE:FILEPATH=%CUDA_PATH_V8_0%/bin/nvcc.exe  
-		)		
-		if "%BUILD_VS_VER%"=="14" (
-					set BUILD_CMAKE_ARGS=%BUILD_CMAKE_ARGS% ^
-					-C"%BLENDER_DIR%\build_files\cmake\config\blender_release.cmake" -DCUDA_NVCC_EXECUTABLE:FILEPATH=%CUDA_PATH_V8_0%/bin/nvcc.exe -DCUDA_NVCC8_EXECUTABLE:FILEPATH=%CUDA_PATH_V8_0%/bin/nvcc.exe  
-		)
+		set BUILD_CMAKE_ARGS=%BUILD_CMAKE_ARGS% ^
+		-C"%BLENDER_DIR%\build_files\cmake\config\blender_release.cmake" 
 )
 
 :DetectMSVC
diff --git a/release/scripts/startup/bl_operators/wm.py b/release/scripts/startup/bl_operators/wm.py
index cc8921f1a8e..1c97d213e05 100644
--- a/release/scripts/startup/bl_operators/wm.py
+++ b/release/scripts/startup/bl_operators/wm.py
@@ -1006,10 +1006,10 @@ class WM_OT_doc_view(Operator):
 
     doc_id = doc_id
     if bpy.app.version_cycle == "release":
-        _prefix = ("http://www.blender.org/documentation/blender_python_api_%s%s_release" %
+        _prefix = ("https://www.blender.org/api/blender_python_api_%s%s_release" %
                    ("_".join(str(v) for v in bpy.app.version[:2]), bpy.app.version_char))
     else:
-        _prefix = ("http://www.blender.org/documentation/blender_python_api_%s" %
+        _prefix = ("https://www.blender.org/api/blender_python_api_%s" %
                    "_".join(str(v) for v in bpy.app.version))
 
     def execute(self, context):
@@ -1023,79 +1023,6 @@ class WM_OT_doc_view(Operator):
         return {'FINISHED'}
 
 
-'''
-class WM_OT_doc_edit(Operator):
-    """Edit online reference docs"""
-    bl_idname = "wm.doc_edit"
-    bl_label = "Edit Documentation"
-
-    doc_id = doc_id
-    doc_new = doc_new
-
-    _url = "http://www.mindrones.com/blender/svn/xmlrpc.php"
-
-    def _send_xmlrpc(self, data_dict):
-        print("sending data:", data_dict)
-
-        import xmlrpc.client
-        user = "blenderuser"
-        pwd = "blender>user"
-
-        docblog = xmlrpc.client.ServerProxy(self._url)
-        docblog.metaWeblog.newPost(1, user, pwd, data_dict, 1)
-
-    def execute(self, context):
-
-        doc_id = self.doc_id
-        doc_new = self.doc_new
-
-        class_name, class_prop = doc_id.split('.')
-
-        if not doc_new:
-            self.report({'ERROR'}, "No input given for '%s'" % doc_id)
-            return {'CANCELLED'}
-
-        # check if this is an operator
-        op_name = class_name.upper() + '_OT_' + class_prop
-        op_class = getattr(bpy.types, op_name, None)
-
-        # Upload this to the web server
-        upload = {}
-
-        if op_class:
-            rna = op_class.bl_rna
-            doc_orig = rna.description
-            if doc_orig == doc_new:
-                return {'RUNNING_MODAL'}
-
-            print("op - old:'%s' -> new:'%s'" % (doc_orig, doc_new))
-            upload["title"] = 'OPERATOR %s:%s' % (doc_id, doc_orig)
-        else:
-            rna = getattr(bpy.types, class_name).bl_rna
-            doc_orig = rna.properties[class_prop].description
-            if doc_orig == doc_new:
-                return {'RUNNING_MODAL'}
-
-            print("rna - old:'%s' -> new:'%s'" % (doc_orig, doc_new))
-            upload["title"] = 'RNA %s:%s' % (doc_id, doc_orig)
-
-        upload["description"] = doc_new
-
-        self._send_xmlrpc(upload)
-
-        return {'FINISHED'}
-
-    def draw(self, context):
-        layout = self.layout
-        layout.label(text="Descriptor ID: '%s'" % self.doc_id)
-        layout.prop(self, "doc_new", text="")
-
-    def invoke(self, context, event):
-        wm = context.window_manager
-        return wm.invoke_props_dialog(self, width=600)
-'''
-
-
 rna_path = StringProperty(
         name="Property Edit",
         description="Property data_path edit",
diff --git a/source/blender/blenkernel/intern/library_query.c b/source/blender/blenkernel/intern/library_query.c
index 66aa8e3f498..c8b0900f217 100644
--- a/source/blender/blenkernel/intern/library_query.c
+++ b/source/blender/blenkernel/intern/library_query.c
@@ -254,6 +254,21 @@ static void library_foreach_paint(LibraryForeachIDData *data, Paint *paint)
 	FOREACH_FINALIZE_VOID;
 }
 
+static void library_foreach_ID_as_subdata_link(
+        ID *id, LibraryIDLinkCallback callback, void *user_data, int flag, LibraryForeachIDData *data)
+{
+	if (flag & IDWALK_RECURSE) {
+		/* Defer handling into main loop, recursively calling BKE_library_foreach_ID_link in IDWALK_RECURSE case is
+		 * troublesome, see T49553. */
+		if (!BLI_gset_haskey(data->ids_handled, id)) {
+			BLI_gset_add(data->ids_handled, id);
+			BLI_LINKSTACK_PUSH(data->ids_todo, id);
+		}
+	}
+	else {
+		BKE_library_foreach_ID_link(id, callback, user_data, flag);
+	}
+}
 
 /**
  * Loop over all of the ID's this datablock links to.
@@ -271,6 +286,8 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 
 		data.ids_handled = BLI_gset_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp, __func__);
 		BLI_LINKSTACK_INIT(data.ids_todo);
+
+		BLI_gset_add(data.ids_handled, id);
 	}
 	else {
 		data.ids_handled = NULL;
@@ -315,7 +332,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				CALLBACK_INVOKE(scene->clip, IDWALK_USER);
 				if (scene->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)scene->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)scene->nodetree, callback, user_data, flag, &data);
 				}
 				/* DO NOT handle scene->basact here, it's doubling with the loop over whole scene->base later,
 				 * since basact is just a pointer to one of those items. */
@@ -570,7 +587,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				}
 				if (material->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)material->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)material->nodetree, callback, user_data, flag, &data);
 				}
 				CALLBACK_INVOKE(material->group, IDWALK_USER);
 				break;
@@ -581,7 +598,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				Tex *texture = (Tex *) id;
 				if (texture->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)texture->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)texture->nodetree, callback, user_data, flag, &data);
 				}
 				CALLBACK_INVOKE(texture->ima, IDWALK_USER);
 				if (texture->env) {
@@ -614,7 +631,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				}
 				if (lamp->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)lamp->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)lamp->nodetree, callback, user_data, flag, &data);
 				}
 				break;
 			}
@@ -654,7 +671,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				}
 				if (world->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)world->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)world->nodetree, callback, user_data, flag, &data);
 				}
 				break;
 			}
@@ -751,7 +768,7 @@ void BKE_library_foreach_ID_link(ID *id, LibraryIDLinkCallback callback, void *u
 				}
 				if (linestyle->nodetree) {
 					/* nodetree **are owned by IDs**, treat them as mere sub-data and not real ID! */
-					BKE_library_foreach_ID_link((ID *)linestyle->nodetree, callback, user_data, flag);
+					library_foreach_ID_as_subdata_link((ID *)linestyle->nodetree, callback, user_data, flag, &data);
 				}
 
 				for (lsm = linestyle->color_modifiers.first; lsm; lsm = lsm->next) {
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 16e15e78185..85322408099 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -3049,6 +3049,14 @@ static bool constructive_modifier_is_deform_modified(ModifierData *md)
 		ScrewModifierData *smd = (ScrewModifierData *)md;
 		return smd->ob_axis != NULL && object_moves_in_time(smd->ob_axis);
 	}
+	else if (md->type == eModifierType_MeshSequenceCache) {
+		/* NOTE: Not ideal because it's unknown whether topology changes or not.
+		 * This will be detected later, so by assuming it's only deformation
+		 * going on here we allow to bake deform-only mesh to Alembic and have
+		 * proper motion blur after that.
+		 */
+		return true;
+	}
 	return false;
 }
 
diff --git a/source/blender/editors/gpencil/gpencil_ops.c b/source/blender/editors/gpencil/gpencil_ops.c
index 98cdbadb87d..057d53ea458 100644
--- a/source/blender/editors/gpencil/gpencil_ops.c
+++ b/source/blender/editors/gpencil/gpencil_ops.c
@@ -144,7 +144,7 @@ static void ed_keymap_gpencil_editing(wmKeyConfig *keyconf)
 	RNA_string_set(kmi->ptr, "data_path_primary", "user_preferences.edit.grease_pencil_eraser_radius");
 	
 	/* Interpolation */
-	WM_keymap_add_item(keymap, "GPENCIL_OT_interpolate", EKEY, KM_PRESS, KM_CTRL, 0);
+	WM_keymap_add_item(keymap, "GPENCIL_OT_interpolate", EKEY, KM_PRESS, KM_CTRL | KM_ALT, 0);
 	WM_keymap_add_item(keymap, "GPENCIL_OT_interpolate_sequence", EKEY, KM_PRESS, KM_SHIFT | KM_CTRL, 0);
 
 	/* Sculpting ------------------------------------- */
diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index a3686cb37d6..321d4b3e1f5 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -2639,6 +2639,7 @@ static void ui_draw_separator(const rcti *rect,  uiWidgetColors *wcol)
 	
 	glEnable(GL_BLEND);
 	glColor4ubv(col);
+	glLineWidth(1.0f);
 	sdrawline(rect->xmin, y, rect->xmax, y);
 	glDisable(GL_BLEND);
 }