* app/airbrush.c
        * app/convolve.c
        * app/dodgeburn.c
        * app/paint_options.h
        * app/paintbrush.c
        * app/pencil.c
        * app/smudge.c
        * app/tool_options.c: cleaned up pressure sensitivity for paint
        tools. I had to rename Pressure to Rate in a few tools to avoid
        confusion with the Pressure option that applies to the brush.

        * app/gimplut.c: indentation, no changes

--Sven