Eric Sumner <ericsumner@fb.com> [Tue, 20 Jan 2015 17:38:42 -0800] rev 24043
test-gendoc: require gettext
If the gettext utilities aren't installed, there is no way to make the
translations. This causes the gettext client to fall back to the untranslated
message, which triggers "** NOTHING TRANSLATED **" errors and a test failure.