Introduction of fake radio backend to enable testing the radio APIs

Includes some behavior for all standard methods.
Also fixes a typo in qradiotunercontrol.h and a couple of minor
bugs in the radio example that came to light using this new
backend.

Change-Id: I65b8b8715a46f0fd702f9630ea81f7d5df527055
Reviewed-on: http://codereview.qt.nokia.com/3619
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

src/plugins/fakeradio/fakeradio.pro

@@ -0,0 +1,23 @@
+load(qt_module)
+
+TARGET = qtmedia_fakeradio
+QT += multimediakit-private
+PLUGIN_TYPE = mediaservice
+
+load(qt_plugin)
+DESTDIR = $$QT.multimediakit.plugins/$${PLUGIN_TYPE}
+
+HEADERS += \
+  fakeradioserviceplugin.h \
+  fakeradioservice.h \
+  fakeradiotunercontrol.h
+
+SOURCES += \
+  fakeradioserviceplugin.cpp \
+  fakeradioservice.cpp \
+  fakeradiotunercontrol.cpp
+
+
+target.path += $$[QT_INSTALL_PLUGINS]/$${PLUGIN_TYPE}
+INSTALLS += target
+