Appropriate l10n sources (to use with --with-l10n-base parameter in .mozconfig) can be downloaded from the following locations:
* [http://hg.mozilla.org/l10n-central/ http://hg.mozilla.org/l10n-central/x-localetesting]
* [http://hg.mozilla.org/releases/l10n/mozilla-aurora/ http://hg.mozilla.org/releases/l10n/mozilla-aurora/x-testing]
* [http://hg.mozilla.org/releases/l10n/mozilla-beta/ http://hg.mozilla.org/releases/l10n/mozilla-beta/x-testing]