Hack to take care of qt strings with ampersand

We will need to reapply this diff when we upgrade Makefile.in.in from a
newer gettext

po/Makefile.in.in

@@ -166,6 +166,8 @@ $(DOMAIN).pot-update: $(POTFILES) $(srcdir)/POTFILES.in remove-potcdate.sed
 	      --msgid-bugs-address="$$msgid_bugs_address" \
 	    ;; \
 	esac
+	sed 's/&/\&/' $(DOMAIN).po > $(DOMAIN).po1  && \
+	mv $(DOMAIN).po1 $(DOMAIN).po;
 	test ! -f $(DOMAIN).po || { \
 	  if test -f $(srcdir)/$(DOMAIN).pot; then \
 	    sed -f remove-potcdate.sed < $(srcdir)/$(DOMAIN).pot > $(DOMAIN).1po && \