Android: Fix compilation on Windows

The qtCompileTest function in configure.prf does not work when
cross-compiling on Windows because it detects the wrong make executable.
And it's anyway not the best way to do this, since what we really want
to check for is the existence of the SDK version, whereas the compile
test could potentially hide a lot of other problems under the same
error message.

Task-number: QTBUG-31405
Change-Id: I2c16b214e40bac5751d4e7098edcc30318756621
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
Fix typo in QMediaPlayer docs.

Change-Id: I0b9110488a2d116cea73abe30f80fc1f487029aa
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Doc: Adding import statement for in Qt Multimedia QML Types

Change-Id: I17e108c5d8524fe428ab8f0ca14130cd4bb78d2d
Reviewed-by: Liang Qi <liang.qi@digia.com>
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>
Reviewed-by: Martin Smith <martin.smith@digia.com>
Doc: Add Qt Multimedia platform notes for Windows

Add a page with details about Qt Multimedia backends on Windows, and
link to it from the module index page.

Initially, cover the status of camera backend in WMF and DirectShow
plugins.

Task-number: QTBUG-29552
Change-Id: I53e5901e2d621c4bbc96a61d5dbb249b4debb8d4
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: Ic82ed2ba60d9855f1490d4ca66451dbc42ae6e2f