Qbs: Fix casing in name of cxxFlags and cFlags

This fixes the problem of Qt Creator not getting the cxxFlags set in
Qbs.

Task-number: QBS-481
Change-Id: Ie233123d62bcf89f3b8ebee1367ca6447b9ade3a
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Qnx: Save BlackBerry user configurations

* Add a bbndkconfigurations.xml file to store BlackBerry user configurations
* Save both manual and auto detected user configurations
* Mark invalid configurations in the BlackBerry settings widget
* Provide a cleanup user action to clear invalid configurations

Task-number: QTCREATORBUG-11004

Change-Id: Ibb29aa5010317f62233865d42d6ca4ae3afa0de3
Reviewed-by: David Kaspar <dkaspar@blackberry.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>