Debugger: Enable "Break on Raise" by default on Windows

Following 2 recent messages on the mailing list, I suggest
this option is turned on by default.

http://lists.qt-project.org/pipermail/qt-creator/2012-February/000295.html
http://lists.qt-project.org/pipermail/qt-creator/2012-February/000331.html



Change-Id: I2abb705ee1aad241bd15c01ea5ca429874693847
Reviewed-by: hjk <qthjk@ovi.com>