Make it possible to bundle Android builds

We need to adapt to the way the jar builds are split on Android,
into a jar file which can be bundled and one which can be distributed
and loaded on the classpath.

We also need to add meta-information about which plugins the
module depends on so that they can be bundled as well.

Task-number: QTBUG-30751
Change-Id: I5cca51c3732ce72985df29672a219c3fd4fe7bac
Reviewed-by: Christian Stromme <christian.stromme@digia.com>
Doc: Define example install paths in .qdocconf

QDoc needs to know the directory under which the examples are
installed in QT_INSTALL_EXAMPLES. Without them, example manifest files
may contain invalid paths.

Change-Id: I3d27517e41e3b1deb7643ca1a40f3905c0e5cc1a
Reviewed-by: Martin Smith <martin.smith@digia.com>
Merge branch 'stable' of git://qt.gitorious.org/qt/qtmultimedia into st