[2.0] Fix casing bug in Parser - IfFunction checks lower-case the function name, but register methods don't.
[2.0] Fix casing bug in Parser - IfFunction checks lower-case the function name, but register methods don't.

git-svn-id: c8c49e1140e1cd2a8fb163f3c2b0f6eec231a71d@7122 625475ce-881a-0410-a577-b389adb331d8

bkw/doctrine