QtIFW

use qt directory separators

QtC2.3 requires everything to be in Qt format.

Change-Id: I8f85ae446c1311537e0b00eb5400807ef1abd796
Reviewed-on: http://codereview.qt.nokia.com/3474
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@nokia.com>