Fix case-sensetivity in locale comparison.
Fix case-sensetivity in locale comparison.

Task-number: QTIFW-203

Change-Id: I7315e0a1ad69dea2f5b3281c5d32eeb1985c6904
Reviewed-by: Tim Jenssen <6a21f175c697b4129e1bafb6e9b52078bb1a6738@digia.com>
Reviewed-by: Karsten Heimrich <81d67632fe4bf9afb88a400b41aa25e19a1d2a12@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw