Use Windows::ApplicationModel to obtain application path

Change-Id: Ie04834a4fd766c4e0a5f4e6e62f92f794fb58906
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Fixed QFileSystemEngine::absoluteName for WinRT

As some of the functions do not work with absolute paths
(LoadPackagedLibrary for example) the WinRT port uses paths
which are relative to the executable and treats these as absolute
paths.

Change-Id: I2c330bb4b18fbd2762c1e189b50b2c9c50d37de9
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
WinRT plugin: Use correct compile flags and set name

/ZW is only to be used together with /EHsc

Change-Id: Iead50c7a80c9f6d5536ace24b70d6c325d0e7c90
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Winrt: Use correct parameters for pageflipper on non-phone

Change-Id: I7919adf0e8a7b647d0bbd69a82227c08db1bc344
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>