Externally Reported Low Severity Security Vulnerability: SMS Resend Vulnerability in Android

Bug 17671795

Require SEND_SMS permission so apps without it won't be able to trick
the messaging app into sending messages.

Change-Id: Ied442f5ca1a7075993fdf39c31f55592e1a7daa3
Merge branch 'cm-11.0' of github.com:CyanogenMod/android_packages_apps_Mms into cm-11.0