centralize and fixup example sources install targets

This follows suit with aeb036e in qtbase.

Change-Id: Ie8580d0a1f38ab9858b0e44c9f99bdc552a1752a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>

examples/multimediawidgets/player/player.pro

@@ -0,0 +1,28 @@
+TEMPLATE = app
+TARGET = player
+
+QT += network \
+      xml \
+      multimedia \
+      multimediawidgets \
+      widgets
+
+HEADERS = \
+    player.h \
+    playercontrols.h \
+    playlistmodel.h \
+    videowidget.h \
+    histogramwidget.h
+SOURCES = main.cpp \
+    player.cpp \
+    playercontrols.cpp \
+    playlistmodel.cpp \
+    videowidget.cpp \
+    histogramwidget.cpp
+
+maemo* {
+    DEFINES += PLAYER_NO_COLOROPTIONS
+}
+
+target.path = $$[QT_INSTALL_EXAMPLES]/multimediawidgets/player
+INSTALLS += target