[po] move transifex scripts to Makefile, add "validate" Makefile target

misc/po/Makefile

@@ -22,8 +22,20 @@ POTFILES.in:
 $(NLSPACKAGE).pot: $(POTFILES) POTFILES.in
 	intltool-update --gettext-package=$(NLSPACKAGE) --pot
 
-update-po: Makefile $(NLSPACKAGE).pot
-	./transifex_pull.sh
+transifex-pull:
+	tx pull -a -f
+
+transifex-push:
+	tx push -s
+
+validate:
+	catalogs='$(CATALOGS)'; \
+	for cat in $$catalogs; do \
+		lang=`basename $$cat .po`; \
+		msgfmt -c $$lang.po -o /dev/null || exit 1; \
+	done
+
+update-po: Makefile $(NLSPACKAGE).pot transifex-pull
 
 refresh-po: Makefile POTFILES.in
 	catalogs='$(CATALOGS)'; \

misc/po/TRANSIFEX_README

@@ -9,10 +9,10 @@ UPLOAD
 
 and pushed using:
 
-    $ sh transifex_push.sh # requires transifex-client
+    $ sh transifex-push # requires transifex-client
 
 DOWNLOAD
 ========
 .po files are downloaded via:
 
-    $ sh transifex_pull.sh # requires transifex-client
+    $ sh transifex-pull # requires transifex-client

misc/po/transifex_pull.sh

@@ -1,2 +0,0 @@
-#!/bin/sh
-tx pull -a -f

misc/po/transifex_push.sh

@@ -1,2 +0,0 @@
-#!/bin/sh
-tx push -s