EPrints::Apache::Rewrite - rewrite cosmetic URL's to internally useful ones.
This rewrites the URL apache receives based on certain things, such as the current language.
Expands /archive/00000123/* to /archive/00/00/01/23/*
and so forth.
This should only ever be called from within the mod_perl system.
This also causes some pages to be regenerated on demand, if they are stale.