Enable the "#include <QMultimedia>" camel-case header

Rename qtmedianamespace.h/cpp -> qmultimedia.h/cpp, and have
sync.profile generate the camel-case header during compilation.

Part of the Header Consistency Project
(http://lists.qt-project.org/pipermail/development/2012-October/007570.html)

Change-Id: Iade9ee6538970b4b9935f169eb2d9a0ea6949a95
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>

sync.profile

@@ -8,7 +8,8 @@
 );
 
 %classnames = (
-    "qmediametadata.h" => "QMediaMetaData"
+    "qmediametadata.h" => "QMediaMetaData",
+    "qmultimedia.h" => "QMultimedia"
 );
 
 # Module dependencies.