QML testlib: Do not modify the arguments passed into QGuiApplication.

argc/argv passed  into QGuiApplication must match those
of main on Windows due to the special command line parsing.

Task-number: QTBUG-36466
Change-Id: Id722692d2bdc18a6627fdaeffb349b78137ae314
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Fix more MSVC2012 compiler warnings.

All are conversions from size_t to int or to unsigned.

Change-Id: Ic94c938dcad6d50a32dd6ec62da2341869cf994d
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
V4 JIT: fix up register usage for linux/macos on x86_64.

Change-Id: Ia6f3a78410fd41c58904a60f4c7a0630cf5230d0
Reviewed-by: Lars Knoll <lars.knoll@digia.com>