Fixed up examples and demos

Changed the .pro files and moved some things around to ensure that the
examples and demos for Qt Multimedia Kit compiles and can be checked by
the CI system.

Change-Id: I915dc38ca76a97f20949df715725659c603231e2
Reviewed-on: http://codereview.qt.nokia.com/1136
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

examples/videowidget/videowidget.pro

@@ -1,13 +1,7 @@
 TEMPLATE = app
-CONFIG += example
+TARGET = videowidget
 
-INCLUDEPATH += ../../src/multimedia ../../src/multimedia/video
-include(../mobility_examples.pri)
-
-CONFIG += mobility
-MOBILITY = multimedia
-
-QMAKE_RPATHDIR += $$DESTDIR
+QT += multimediakit
 
 HEADERS = \
     videoplayer.h \
@@ -20,3 +14,9 @@ SOURCES = \
     videowidget.cpp \
     videowidgetsurface.cpp
 
+target.path = $$[QT_INSTALL_EXAMPLES]/qtmultimediakit/videowidget
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS *.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtmultimediakit/videowidget
+
+INSTALLS += target sources
+