* pixmaps/qmasknosel.xpm
        * pixmaps/qmasksel.xpm: Ugly pixmaps that tigert promised to replace

        * app/channel.[ch]
        * app/channel_cmds.c : made some of the private structures accessible
          through exported functions to keep things a bit clean

        * app/interface.c
        * app/gdisplay.[ch]
        * app/gimpimageP.h
        * app/gimpimage.[ch]
        * app/undo.[ch]: added qmasks

        * app/Makefile.am
        * app/qmask.[ch]: added new files for qmask support

        * tools/pdbgen/pdb/channel.pdb: changed some channel stuff to keep
          things a bit more private