Use -Bsymbolic-functions, drop g*alias PLT hackery

This is a minimal patch-out of the galias functionality.

Based on a Glib pach by Ryan Lortie

https://bugzilla.gnome.org/show_bug.cgi?id=623845

gdk/Makefile.am

@@ -50,6 +50,7 @@ endif
 # since automake doesn't support conditionalized libsomething_la_LDFLAGS
 # we use the general approach here
 LDADD = \
+	$(GTK_LINK_FLAGS)						\
 	-version-info $(LT_VERSION_INFO)		 		\
 	-export-dynamic 						\
 	-rpath $(libdir) 						\

gdk/makegdkalias.pl

@@ -1,5 +1,7 @@
 #!/usr/bin/perl -w
 
+exit 0;
+
 my $do_def = 0;
 
 if (($#ARGV >= 0) && ($ARGV[0] eq "-def")) {