Make sure output dir exsits for xsltproc

Change-Id: I79822e46a56b8ff65e3c806462fa1d93688c39d1

extras/CustomTarget_glade.mk

@@ -19,6 +19,7 @@ $(call gb_CustomTarget_get_workdir,extras/source/glade)/libreoffice-catalog.xml
         | $(call gb_ExternalExecutable_get_dependencies,xsltproc)
 	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),$(true),XSLT,4)
 	$(call gb_Helper_abbreviate_dirs, \
+	mkdir -p $(dir $@) && \
 	$(call gb_ExternalExecutable_get_command,xsltproc) --nonet \
 		-o $@ $(SRCDIR)/extras/source/glade/makewidgetgroup.xslt $< \
 	)