- added modifier_dependsOnTime to check if modifier needs updating

based on time change. would be nice if dep graph could handle this.
 - made dep check if modifiers need update on time change
 - fix render crash (access null)
 - added new Build Effect modifier type. compared to old one works as
   a full member of modifier system, means can apply subsurf, etc on
   it, reorder, what have you. and it is all nice and self contained.
 - removed old Build effect, old files convert to new style on load
 - couldn't help myself, added a randomize feature to build effect
 - removed Python BuildEffect support

source/blender/python/SConscript

@@ -12,7 +12,6 @@ source_files = ['BPY_interface.c',
                 'api2_2x/BGL.c',
                 'api2_2x/Blender.c',
                 'api2_2x/Bone.c',
-                'api2_2x/Build.c',
                 'api2_2x/Camera.c',
                 'api2_2x/CurNurb.c',
                 'api2_2x/Curve.c',