Converted the Userpreference buttons to zr's new ButBit calls.

source/blender/blenkernel/intern/exotic.c

source/blender/blenkernel/intern/object.c

source/blender/imbuf/intern/util.c

source/blender/makesdna/DNA_userdef_types.h

source/blender/python/api2_2x/Blender.c

source/blender/python/api2_2x/Object.c

source/blender/src/drawimage.c

source/blender/src/drawipo.c

source/blender/src/drawscene.c

source/blender/src/drawview.c

source/blender/src/editaction.c

source/blender/src/editipo.c

source/blender/src/editkey.c

source/blender/src/editnla.c

source/blender/src/editobject.c

source/blender/src/editscreen.c

source/blender/src/editsima.c

source/blender/src/filesel.c

source/blender/src/ghostwinlay.c

source/blender/src/header_filesel.c