Tool for Checking gettext POT/PO/MO Fileshttp://jwilk.net/software/i18nspector
i18nspector is a tool for checking translation templates (POT), message
catalogues (PO) and compiled message catalogues (MO) files for common
problems. These files are used by the GNU gettext translation functions
and tools in many different development environments.
Checks include: incorrect or inconsistent character encoding, missing
headers, incorrect language codes and improper plural forms.