Mms: Share vCard and contacts information

Add share contacts function for message:
 - Share vCard via mms
 - Share contacts information via sms

Change-Id: I7cbcb7600240329cd0e05df63e476be02e5725a9

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml
	src/com/android/mms/ui/ComposeMessageActivity.java