* app/channel.c: get rid of compiler warnings
* app/histogram_tool.c
* app/histogram_tool.h: added a gradient below the histogram so
it looks more like the curves and levels tool
* app/gimpbrushpipe.c
* libgimp/parasiteio.c
* libgimp/parasiteio.h: plugged another mem-leaks. At least
The GIMP now starts without leaking memory...
--Sven