Direct2D QPA: Pixel-align aliased drawing

Aliased drawing has so far not been perfectly pixel aligned, resulting in
less than stellar output in some instances. Although a little hacky,
adding 0.5 to all coordinates when in aliased mode fixes things up nicely.
There doesn't appear to be a better way to get d2d to cooperate as we
would like it to.

Change-Id: I10ee494d2f576bfd0eca6d4429095a3726c0bf14
Reviewed-by: Risto Avila <risto.avila@digia.com>
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Windows Phone: add language control to the package manifest

This allows the developer to provide a list of languages to the manifest
by listing them in WINRT_MANIFEST.languages. It also allows setting the
default language with WINRT_MANIFEST.default_language.

Task-number: QTBUG-38557
Change-Id: I5cb94c9f45146e3068d0833b9e669dc17dca14b2
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Improve accessibility event failure output

Simpler code and more information ;)

Change-Id: I5ca6b2ee88e51dbbd3ec2f08c4ea79bc11b649fa
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>