Add SMS Middleware layer.

Change-Id: If5621d0c5126d6917ab00143af645692f3c4a384

Conflicts:
	src/java/com/android/internal/telephony/IccSmsInterfaceManager.java
SMSDispatcher: Fix determining the defaultSmsApp for proxied messages

We can't rely on the calling UID, since for re-broadcasted texts that'll
always be the telephony itself; so if called by the framework, use
the sentIntent creator to determine which app originated the message

Change-Id: I60ac02f6ae09f4260f5494659a174352f353aa2a
IccSmsInterfaceManager: Don't intercept short-code premium messages

For both charging and potential timing factors on emergency and carrier
services, short codes should be delivered directly to the network.

Change-Id: If9d288048f9925573f8c5f2e51f0c2df789277bd

Conflicts:
	src/java/com/android/internal/telephony/IccSmsInterfaceManager.java
Voice+, Whisperpush: Need to send SMS_RECEIVED_ACTION for all apps.

Change-Id: I05fe3fb6dc6acea612e25d7a93d0891ad6d1754e