libglade: convert old-style hook to new-style hook

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libglade/libglade.mk

@@ -9,9 +9,11 @@ LIBGLADE_SITE = http://ftp.gnome.org/pub/GNOME/sources/libglade/2.6/
 LIBGLADE_INSTALL_STAGING = YES
 LIBGLADE_DEPENDENCIES = host-pkg-config libglib2 libgtk2 atk libxml2
 
-$(eval $(call AUTOTARGETS,package,libglade))
-
-$(LIBGLADE_HOOK_POST_INSTALL):
+define LIBGLADE_INSTALL_FIX
 	rm -rf $(TARGET_DIR)/usr/share/xml/libglade \
 	       $(TARGET_DIR)/usr/bin/libglade-convert
-	touch $@
+endef
+
+LIBGLADE_POST_INSTALL_TARGET_HOOKS += LIBGLADE_INSTALL_FIX
+
+$(eval $(call AUTOTARGETS,package,libglade))