Removing Blender Game Engine from Blender 2.8

Folders removed entirely:
* //extern/recastnavigation
* //intern/decklink
* //intern/moto
* //source/blender/editors/space_logic
* //source/blenderplayer
* //source/gameengine

This includes DNA data and any reference to the BGE code in Blender itself.
We are bumping the subversion.

Pending tasks:
* Tile/clamp code in image editor draw code.
* Viewport drawing code (so much of this will go away because of BI removal
  that we can wait until then to remove this.

source/blender/python/intern/bpy_app_build_options.c

@@ -42,7 +42,6 @@ static PyStructSequence_Field app_builtopts_info_fields[] = {
 	{(char *)"cycles", NULL},
 	{(char *)"cycles_osl", NULL},
 	{(char *)"freestyle", NULL},
-	{(char *)"gameengine", NULL},
 	{(char *)"image_cineon", NULL},
 	{(char *)"image_dds", NULL},
 	{(char *)"image_frameserver", NULL},
@@ -64,7 +63,6 @@ static PyStructSequence_Field app_builtopts_info_fields[] = {
 	{(char *)"mod_smoke", NULL},
 	{(char *)"collada", NULL},
 	{(char *)"opencolorio", NULL},
-	{(char *)"player", NULL},
 	{(char *)"openmp", NULL},
 	{(char *)"openvdb", NULL},
 	{(char *)"alembic", NULL},
@@ -140,12 +138,6 @@ static PyObject *make_builtopts_info(void)
 	SetObjIncref(Py_False);
 #endif
 
-#ifdef WITH_GAMEENGINE
-	SetObjIncref(Py_True);
-#else
-	SetObjIncref(Py_False);
-#endif
-
 #ifdef WITH_CINEON
 	SetObjIncref(Py_True);
 #else
@@ -272,12 +264,6 @@ static PyObject *make_builtopts_info(void)
 	SetObjIncref(Py_False);
 #endif
 
-#ifdef WITH_PLAYER
-	SetObjIncref(Py_True);
-#else
-	SetObjIncref(Py_False);
-#endif
-
 #ifdef _OPENMP
 	SetObjIncref(Py_True);
 #else