1999-08-27  Tor Lillqvist  <tml@iki.fi>

* app/paint_core.h: Add a flags field and corresponding type
ToolFlags to PaintCore. The only flag bit defined so far is
TOOL_CAN_HANDLE_CHANGING_BRUSH, which those tools who don't mind
if the brush changes while painting (as in the case of pixmap pipe
brushes).

* app/paint_core.c: Test above flag before calling the brush's
select_brush method.

* app/airbrush.c
* app/paintbrush.c
* app/pencil.c: Set above flag.

* app/makefile.{cygwin,msc}: Add latest additions.