Merged from weskaggs branch at Mitch's request. Will
need to update devel docs.
Place scale entry code into separate files, no
functional changes.
* libgimpwidgets/gimpscaleentry.c
* libgimpwidgets/gimpscaleentry.h: new files.
* libgimpwidgets/gimpwidgets.h
* libgimpwidgets/gimpwidgets.c
* libgimpwidgets/gimpwidgets.h
* libgimpwidgets/Makefile.am: changed accordingly.
svn path=/trunk/; revision=24887