revert r44887, changes were OK but caused too many problems, better do this as a smaller patch.

sphinx_doc_gen.sh broke building docs - 
- examples/ svn directory was being removed since it assumed an out-of-source build.
- include references somehow stopped working (didnt find why).

also fixed an unrelated error with building docs in object_utils.py

release/scripts/modules/bpy_extras/object_utils.py

@@ -21,14 +21,14 @@
 __all__ = (
     "add_object_align_init",
     "object_data_add",
-    "object_generic_transform_prop",
+    "AddObjectHelper",
     )
 
 
 import bpy
 import mathutils
 
-from bpy.props import (BoolProperty, FloatVectorProperty)
+from bpy.props import BoolProperty, FloatVectorProperty
 
 
 def add_object_align_init(context, operator):