FELIX-4408 Fix lower casing in special case locales (such as Turkish) where
  some characters have special case upper and lower case characters.
  (applied slightly modified patch by Tobias Bocanegra, thanks alot)

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1561599 13f79535-47bb-0310-9956-ffa450edef68