* INSTALL: updated to properly reflect installation procedure

        * app/text_tool.c: Fixed bad string in tool description

        * libgimp/gimppixelrgn.c: tiles aren't marked dirty in
        gimp_pixel_rgn_get_pixel

        * plug-ins/edge/edge.c
        * plug-ins/edge/emboss.c
        * plug-ins/edge/laplace.c
        * plug-ins/edge/sobel.c: DEC OSF1 cannont handle reference to
        array element with a negative arugment with an unsigned int
        (gimp-joke-980108-0)

        * plug-ins/sinus/sinus_logo.h: got rid of really long string

        * plug-ins/refract/Makefile.am
        * plug-ins/refract/refmain.c: fixed megawidget reference

        * plug-ins/xpm/xpm.c: made our own case-insenstive strcmp
        for checking for transperancy

-Yosh