Code review comment for lp:~songofacandy/bzr/i18n-msgextract

@Naoki: Also, it would be nice if you collect the knowledge you acquire in some document we can refer to *in* the code base (doc/developers/i18n.txt comes to mind)

Don't worry about it being perfect or even finalized, just put what you know today there and we'll refine it as we get a better collective understanding.