libfm-extra shouldn't depend on gtk-2.0

[Mike Qin <mikeandmore%gmail.com@localhost>]

Hi

Currently libfm-extra depends on gtk-2.0, which is not necessary. This
is confusing for libfm-qt users because it depends on menu-cache, and
menu-cache depends on libfm-extra.

Here's the patch to make it only depending on glib-2.0.

Thanks
Mike Qin

Index: sysutils/libfm-extra/Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/sysutils/libfm-extra/Makefile,v
retrieving revision 1.17
diff -u -r1.17 Makefile
--- sysutils/libfm-extra/Makefile	17 Aug 2020 20:20:06 -0000	1.17
+++ sysutils/libfm-extra/Makefile	24 Apr 2021 19:44:20 -0000
@@ -27,5 +27,5 @@
 	${RUN} ${RM} -f ${DESTDIR}${PREFIX}/include/libfm
 	${RUN} ${CP} -r ${DESTDIR}${PREFIX}/include/libfm-1.0 ${DESTDIR}${PREFIX}/include/libfm
 
-.include "../../x11/gtk2/buildlink3.mk"
+.include "../../devel/glib2/buildlink3.mk"
 .include "../../mk/bsd.pkg.mk"