Call recording service implementation, show recordings and allow playback in call history

Change-Id: I56bf6857d87260e20b6a84c4db6e463b0fd87dcc

Conflicts:
	Android.mk
	AndroidManifest.xml
	res/values/cm_strings.xml
	src/com/android/dialer/CallDetailActivity.java
Remove sysprop flag for enabling call recording