Fix ABI violation in QWebSettings::CSSCompositingEnabled

QWebSettings::CSSCompositingEnabled was added in the middle of the enum
instead of being put at the end.

Since it controlled a RuntimeEnabledFeatures which are global and does
not work per page like QWebSettings should. The setting has been removed
but kept enabled by default.

Change-Id: I5dc35eee78c3846c8482e044c6dd5cd34410969c
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
Disable QtWebkit for QNX

BlackBerry/QNX has the torch webkit.

Change-Id: I3defb065b18fc7e00d6b3bdcfeb79a05fb51e629
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>