change bpy.app.build_options from frozen set to PyStructSequence_Field, mathes similar members of bpy.app and less error prone (typos won't fail silently).


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@53548 954f8c5b-7b00-dc11-b283-0030488c597c