* gegl/gegl-plugin.h: renamed gegl4float to g4float.
* gegl/operation/gegl-operation-processors.c:
(gegl_class_register_alternate_vfunc): code simplification and
cleanup.
Migrated with API:
* operations/common/brightness-contrast.c:
(gegl_chant_class_init):
* operations/common/invert.c:
(gegl_chant_class_init):
* operations/generated/other-blend.rb:
* operations/generated/svg-12-porter-duff.rb:

svn path=/trunk/; revision=2220