* app/makefile.cygwin
* app/makefile.msc
* plug-ins/makefile.cygwin
* plug-ins/makefile.msc
* modules/makefile.cygwin
* modules/makefile.msc
* tools/gcg/makefile.cygwin: Various updates. GCC-compiled DLL
name change.
* app/context_manager.c: Include paint_options.h for prototype.
* app/gimpimage.c (gimp_image_initialize_projection): Break out of
loop as soon as possible.
* app/menus.c (menus_last_opened_cmd_callback): Check if referring
to entry not in list.
* app/module_db.c (valid_module_name): (Win32) Require module DLL
names to include name of compiler built with.
* app/paths_dialog.c (paths_draw_segment_points): No use to draw
lines if we have less that two points.
* app/qmask.c: Include stdio.h and floating_sel.h.
* libgimp/makefile.cygwin: New file.
* libgimp/Makefile.am: Distribute above file.
* libgimp/gimp.def: Update.
* libgimp/gimpenv.c (gimp_directory): Don't warn about missing
home directory on Win32, it is perfectly natural.
* plug-ins/sel2path/global.h: Bypass unused declarations, some
of which clash with functions in MSVCRT.
* plug-ins/sel2path/math.c
* modules/colorsel_water.c: Define M_PI if necessary.
* plug-ins/sel2path/sel2path.c: Include config.h and
glib.h. Define rint() if needed.
* plug-ins/sel2path/vector.c: Include glib.h (for hypot() renaming
on Win32; In the MS C runtime, as hypot() is non-ANSI, it's called
_hypot(), sigh).
* plug-ins/sinus/sinus_logo.h: Use indexed format, it is easier on
some compilers than the huge string.
* configure.in acconfig.h: Check for mmap.
* modules/colorsel_triangle.c: No need to include gdkx.h. Define
M_PI if needed.
* modules/makefile.msc: Use GLib 1.3, update GTk+ paths.
