Include Locales directory in releases

[Screwtapello]

bsnes/Locales/Japanese.bml contains a (partial) translation of the bsnes GUI to Japanese. To see it in action, copy/symlink the Locales/ directory beside the Database/ and Shaders/ directories (for example, to ~/.local/share/bsnes) and then launch bsnes with:

path/to/bsnes --locale=Japanese

I have no idea how good the translation is, and I don't know if the untranslated parts are untranslated because byuu never got around to them, or whether there's some technical limitation in place, but I know nobody's going to be interested in improving it if they don't know it exists, so we should ship it.