Comment 8 for bug 1560577

I encountered another issue at <http://askubuntu.com/q/753516>: If you for instance pass the argument "en_IN.UTF-8", locale-gen currently sees it as unsupported, since the real name in SUPPORTED is just "en_IN". New locales tend to be UTF-8 only, and I think locale-gen should accept arguments with the codeset appended in these cases.

@Adam: I made a patch out of my proposed changes. If other glibc stuff is on its way in before final freeze, you may want to consider it together with them. Otherwise I think the proposed changes would motivate a separate upload.