Update license headers and add new license files

- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3 & LICENSE.GPLv2
- Removed LICENSE.GPL

Change-Id: Ied06887225df341064c12bcc14c259ae74116f2e
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
Introducing Windows Runtime backend

This lays the foundation for using supported APIs in Media Foundation
for the Windows Runtime family of devies. Due to the narrowing of
supported MF classes, as well as classes that are only available on
Windows 8 and newer, this backend is built as a new plugin rather than
a modification to the existing wmf plugin.

[ChangeLog] Added a new backend plugin, winrt, to support multimedia
within Windows Runtime OSes.

Change-Id: If64ac417127b7400baa5e56fe02b65f909a4dece
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@digia.com>
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
winrt: Add media playback service

This introduces a MediaPlayer service based on the MFEngineEx API. Only
scene graph video rendering is supported at this time. The video renderer
control is abstracted in order to provide a base for future video nodes
which do not source their content from the MF engine.

[ChangeLog] Media player support was added to the winrt backend.

Change-Id: I8155a1030466ea352fad0a87d1ae97a88983760c
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Add a declaration to QIODevice

It isn't getting #included nor forward-declared at this point. That was
only an indirect inclusion.

qaudiosystem.h:78:24: error: ‘QIODevice’ has not been declared

Change-Id: I5b9121b693bb06414638e8a4664115597da7466f
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Fix little typo in QCameraExposureControl

Should not shuld

Change-Id: I97f7e6ce322dc73bc3b1775a336493d95da848a2
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Merge remote-tracking branch 'origin/5.4' into dev

Change-Id: Ib2ef516ab5f5dab86b73fdca5503048e87840280
implement QVideoProbe for iOS camera

This commit allows to use QVideoProbe for QCamera on iOS.
The logic for the implementation is taken from the Android plugin.

[ChangeLog][Platform Specific Changes][iOS]
QVideoProbe support is implemented for QCamera on iOS

Change-Id: I1db50defa8518287c4f1f3cc6602881702a95849
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>