1999-07-06  Michael Natterer  <mitschel@cs.tu-berlin.de>

        * app/airbrush.c
        * app/blend.c
        * app/bucket_fill.c
        * app/clone.c
        * app/convolve.c
        * app/dodgeburn.c
        * app/eraser.c
        * app/ink.c
        * app/paintbrush.c
        * app/pencil.c
        * app/smudge.c: get opacity/paint mode from the current context
        (currently always the user context).

        * app/gimage_mask.c: the "stroke" command uses the paintbrush's
        settings if the current context is the user context and we are in
        per-tool paint options mode.

        * app/context_manager.[ch]
        * app/paint_options.h
        * app/preferences_dialog.c
        * app/tool_options.c
        * app/tools.c: moved the global/per-tool paint options switching
        to the context manager. The tool options themselves only contain
        the widgets for them now. This should fix the segfaults happening
        in per-tool mode.
	Removed the disclaimer from the prefs. dlg. as it seems to work
	now. The impl. in the context manager however is still a hack.

        * app/brush_select.c
        * app/brushes_cmds.c
        * tools/pdbgen/pdb/brushes.pdb: same as above.

        * app/lc_dialog.c: minimal code reduction. No functionality changed.