Since babl_foo_from_id() will not be part of the public API we can

Since babl_foo_from_id() will not be part of the public API we can
revert to having the short variant babl_foo() instead of
babl_foo_from_name().

* babl/babl-class.h
* babl/babl-component.h
* babl/babl-conversion.c
* babl/babl-conversion.h
* babl/babl-extension.h
* babl/babl-fish-path.c
* babl/babl-fish.c
* babl/babl-format.c
* babl/babl-format.h
* babl/babl-image.c
* babl/babl-internal.h
* babl/babl-model.c
* babl/babl-model.h
* babl/babl-type.c
* babl/babl-type.h
* extensions/CIE-Lab.c
* extensions/frequency.c
* extensions/gegl-fixups.c
* extensions/gggl-lies.c
* extensions/gggl.c
* extensions/gimp-8bit.c
* extensions/naive-CMYK.c
* extensions/sse-fixups.c
* tests/grayscale_to_rgb.c
* tests/rgb_to_bgr.c
* tests/rgb_to_ycbcr.c

svn path=/trunk/; revision=389