Having DISABLE_DEPRECATED flags set in the distribution breaks
building with libraries later than those which the maintainer
happened to have installed.  This patch removes them.

diff -r -U 3 a/gtk/Makefile.am b/gtk/Makefile.am
--- a/gtk/Makefile.am	2003-05-09 15:55:05.000000000 +0200
+++ b/gtk/Makefile.am	2013-12-26 15:06:38.000000000 +0100
@@ -36,11 +36,7 @@
 	-I$(top_srcdir)			\
 	-I$(top_builddir)/gdk		\
 	$(GTKGLEXT_DEBUG_FLAGS)		\
-	$(GTKGLEXT_DEP_CFLAGS)		\
-	-DG_DISABLE_DEPRECATED		\
-	-DGDK_DISABLE_DEPRECATED	\
-	-DGDK_PIXBUF_DISABLE_DEPRECATED	\
-	-DGTK_DISABLE_DEPRECATED
+	$(GTKGLEXT_DEP_CFLAGS)
 
 common_ldflags = \
 	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) 	\
diff -r -U 3 a/gtk/Makefile.in b/gtk/Makefile.in
--- a/gtk/Makefile.in	2006-02-05 04:17:42.000000000 +0100
+++ b/gtk/Makefile.in	2013-12-26 15:07:00.000000000 +0100
@@ -234,11 +234,7 @@
 	-I$(top_srcdir)			\
 	-I$(top_builddir)/gdk		\
 	$(GTKGLEXT_DEBUG_FLAGS)		\
-	$(GTKGLEXT_DEP_CFLAGS)		\
-	-DG_DISABLE_DEPRECATED		\
-	-DGDK_DISABLE_DEPRECATED	\
-	-DGDK_PIXBUF_DISABLE_DEPRECATED	\
-	-DGTK_DISABLE_DEPRECATED
+	$(GTKGLEXT_DEP_CFLAGS)
 
 
 common_ldflags = \