jbossas/jboss-as — pull request #2018 by kabir (2012-04-11 09:36:08+00:00)
Title: String.toUpperCase(Locale) and String.toLowerCase(Locale) AS7-4301

This is still work in progress but replaces all the occurrences in the AS code base. There are a few outstanding JIRAS linked to this which should solve the problem.