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>

src/multimedia/multimedia.pro

@@ -31,7 +31,7 @@ PUBLIC_HEADERS += \
     qmediaservice.h \
     qmediaserviceproviderplugin.h \
     qmediatimerange.h \
-    qtmedianamespace.h \
+    qmultimedia.h \
     qtmultimediadefs.h \
 
 SOURCES += \
@@ -43,10 +43,10 @@ SOURCES += \
     qmediaservice.cpp \
     qmediaserviceprovider.cpp \
     qmediatimerange.cpp \
-    qtmedianamespace.cpp \
     qmediaresourcepolicyplugin_p.cpp \
     qmediaresourcepolicy_p.cpp \
-    qmediaresourceset_p.cpp
+    qmediaresourceset_p.cpp \
+    qmultimedia.cpp
 
 include(audio/audio.pri)
 include(camera/camera.pri)