Check .po files before committing.

src/hooks/pre-commit.hook

@@ -73,3 +73,21 @@ echo "==========================================================================
         exit 1
     fi
 fi
+
+
+for file in `git diff-index --cached --name-only HEAD --diff-filter=ACMR| grep "\.po$"` ; do
+    echo "Checking ${file}"
+    nf=`git checkout-index --temp ${file} | cut -f 1`
+    ./src/i18n/helpers/polint.py "${nf}"
+    r=$?
+    rm "${nf}"
+    if [ $r != 0 ] ; then
+echo "================================================================================================="
+echo " Format error in: $file                                                                          "
+echo "                                                                                                 "
+echo " Please fix before committing. Don't forget to run git add before trying to commit again.        "
+echo "                                                                                                 "
+echo "================================================================================================="
+        exit 1
+    fi
+done