qmake: added file deployment support for winrt and winphone targets

The user needs to specify the DEPLOYMENT variable. The syntax
is the same as previously used for DEPLOYMENT. For more info
please refer to the qmake documentation. The change adds
a new itemgroup, "Deployment Files". All files in this
itemgroup are marked as DeploymentContent and are then
packaged with the application either as XAP or the WinRT
specific file format.

Change-Id: Icf85887287c1c97eb782704340eaa3f8dde6719e
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Disable sqlite for Windows Phone 8 builds

sqlite cannot be supported as Windows phone is
missing the needed memory mapping functionality.

Change-Id: I20e89292b9c7802c7402e8095854b72a9f21e614
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>