Rename any instance of scene layer or render layer in code with view layer

The RenderResult struct still has a listbase of RenderLayer, but that's ok
since this is strictly for rendering.

* Subversion bump (to 2.80.2)
* DNA low level doversion (renames) - only for .blend created since 2.80 started

Note: We can't use DNA_struct_elem_find or get file version in init_structDNA,
so we are manually iterating over the array of the SDNA elements instead.

Note 2: This doversion change with renames can be reverted in a few months. But
so far it's required for 2.8 files created between October 2016 and now.

Reviewers: campbellbarton, sergey

Differential Revision: https://developer.blender.org/D2927

release/scripts/startup/bl_operators/clip.py

@@ -611,24 +611,24 @@ class CLIP_OT_setup_tracking_scene(Operator):
         CLIP_set_viewport_background(context, True, sc.clip, sc.clip_user)
 
     @staticmethod
-    def _setupRenderLayers(context):
+    def _setupViewLayers(context):
         scene = context.scene
-        rlayers = scene.render_layers
+        view_layers = scene.view_layers
 
-        if not scene.render_layers.get("Foreground"):
-            if len(rlayers) == 1:
-                fg = rlayers[0]
+        if not view_layers.get("Foreground"):
+            if len(view_layers) == 1:
+                fg = view_layers[0]
                 fg.name = 'Foreground'
             else:
-                fg = scene.render_layers.new("Foreground")
+                fg = view_layers.new("Foreground")
 
             fg.use_sky = True
             fg.layers = [True] + [False] * 19
             fg.layers_zmask = [False] * 10 + [True] + [False] * 9
             fg.use_pass_vector = True
 
-        if not scene.render_layers.get("Background"):
-            bg = scene.render_layers.new("Background")
+        if not view_layers.get("Background"):
+            bg = view_layers.new("Background")
             bg.use_pass_shadow = True
             bg.use_pass_ambient_occlusion = True
             bg.layers = [False] * 10 + [True] + [False] * 9
@@ -940,8 +940,8 @@ class CLIP_OT_setup_tracking_scene(Operator):
     def _setupObjects(self, context):
         scene = context.scene
 
-        fg = scene.render_layers.get("Foreground")
-        bg = scene.render_layers.get("Background")
+        fg = scene.view_layers.get("Foreground")
+        bg = scene.view_layers.get("Background")
 
         all_layers = self._mergeLayers(fg.layers, bg.layers)
 
@@ -985,7 +985,7 @@ class CLIP_OT_setup_tracking_scene(Operator):
         self._setupWorld(context)
         self._setupCamera(context)
         self._setupViewport(context)
-        self._setupRenderLayers(context)
+        self._setupViewLayers(context)
         self._setupNodes(context)
         self._setupObjects(context)