Force start menu cache update.
Force start menu cache update.

Task-number: QTCREATORBUG-8145

Seems to be a known issue on at least Windows Vista.

Change-Id: Ib3b6a405f704da991773cbe1ef3c16c1f763959c
Reviewed-by: Tim Jenssen <6a21f175c697b4129e1bafb6e9b52078bb1a6738@digia.com>
Reviewed-by: Robert Loehning <1f928983f879a6fe326acd94487f754cc16e1fe4@digia.com>

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