initial work on making metrics a configure option

Conflicts:
	components/library/localdatabase/src/sbLocalDatabaseLibraryLoader.cpp
	components/mediacore/playback/history/src/sbPlaybackHistoryService.cpp
	components/remoteapi/src/sbRemotePlayer.cpp
fix error from preprocessing and in tiers.mk
may as well remove this url now...
preprocess files and other changes to app/content for metrics autoconf option