* applied gimp-lecorfec-99041[02]-0, changes follow

* plug-ins/FractalExplorer/Dialogs.h (make_color_map):
replaced free with g_free to fix segfault.

* plug-ins/Lighting/lighting_preview.c (compute_preview):
allocate xpostab and ypostab only when needed (it could also be
allocated on stack with a compilation-fixed size like MapObject).
It avoids to lose some Kb on each preview :)
Also reindented (unfortunate C-c C-q) some other lines.

* plug-ins/Lighting/lighting_main.c (run):
release allocated postabs.

* plug-ins/Lighting/lighting_ui.c:
callbacks now have only one argument because gck widget use
gtk_signal_connect_object. Caused segfault for scale widget.

* plug-ins/autocrop/autocrop.c (doit):
return if image has only background (thus fixing a segfault).

* plug-ins/emboss/emboss.c (pluginCore, emboss_do_preview):
replaced malloc/free with g_malloc/g_free (unneeded, but
shouldn't everyone use glib calls ? :)

* plug-ins/flame/flame.c :
replaced a segfaulting free, and several harmless malloc/free pairs.

* plug-ins/flame/megawidget.c (mw_preview_build):
replaced harmless malloc/free pair.
Note : mwp->bits is malloc'ed but seems to be never freed.

* plug-ins/fractaltrace/fractaltrace.c (pixels_free):
replaced a bunch of segfaulting free.
(pixels_get, dialog_show): replaced gtk_signal_connect_object
with gtk_signal_connect to accomodate callbacks (caused STRANGE
dialog behaviour, coz you destroyed buttons one by one).

* plug-ins/illusion/illusion.c (dialog):
same gtk_signal_connect_object replacement for same reasons.

* plug-ins/libgck/gck/gckcolor.c :
changed all gck_rgb_to_color* functions to use a static GdkColor
instead of a malloc'ed area. Provided reentrant functions with
the old behaviour (gck_rgb_to_color*_r). Made some private functions
static, too.
gck_rgb_to_gdkcolor now use the new functions while
gck_rgb_to_gdkcolor_r is the reentrant version.
Also affected by this change: gck_gc_set_foreground and
gck_gc_set_background (no more free(color)).

* plug-ins/libgck/gck/gckcolor.h :
added the gck_rgb_to_gdkcolor_r proto.

* plug-ins/lic/lic.c (ok_button_clicked, cancel_button_clicked) :
segfault on gtk_widget_destroy, now calls gtk_main_quit.
(dialog_destroy) : segfault on window closure when called by
"destroy" event. Now called by "delete_event".

* plug-ins/megawidget/megawidget.c (mw_preview_build):
replaced harmless malloc/free pair.
Note : mwp->bits is malloc'ed but seems to be never freed.

* plug-ins/png/png.c (load_image):
replaced 2 segfaulting free.

* plug-ins/print/print-ps.c (ps_print):
replaced a segfaulting free (called many times :).

* plug-ins/sgi/sgi.c (load_image, save_image):
replaced a bunch of segfaulting free, and did some harmless
inits to avoid a few gcc warnings.

* plug-ins/wind/wind.c (render_wind):
replaced a segfaulting free.
(render_blast): replaced harmless malloc/free pair.

* plug-ins/bmp/bmpread.c (ReadImage):
yet another free()/g_free() problem fixed.

* plug-ins/exchange/exchange.c (real_exchange):
ditto.

* plug-ins/fp/fp.h: added Frames_Check_Button_In_A_Box proto.
* plug-ins/fp/fp_gtk.c: closing subdialogs via window manager
wasn't handled, thus leading to errors and crashes.
Now delete_event signals the dialog control button
to close a dialog with the good way.

* plug-ins/ifscompose/ifscompose.c (value_pair_create):
tried to set events mask on scale widget (a NO_WINDOW widget).

* plug-ins/png/png.c (save_image):
Replaced 2 free() with g_free() for g_malloc'ed memory.
Mysteriously I corrected the loading bug but not the saving one :)

-Yosh