enable SizeGrip on Linux
enable SizeGrip on Linux

Change-Id: I7a17b2bdfc993e9b2db32d27d7290e2cdb7e671b
Reviewed-on: http://codereview.qt.nokia.com/3706
Reviewed-by: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Tim Jenssen <6a21f175c697b4129e1bafb6e9b52078bb1a6738@nokia.com>

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