Merge tag 'android-6.0.0_r26' into HEAD

Android 6.0.0 release 26

* tag 'android-6.0.0_r26': (23 commits)
  Enable group mms for Operators
  Turn off Instant Lettering for DR carriers
  Disable KEY_ADDITIONAL_CALL_SETTING_BOOL for U+
  Hide 2G option in Preferred network type for EE
  Always show "Turn on Notification" in emergency broadcast settings.
  Add carrier config override to escape " and \ for SKT.
  Show APN Menu for CDMA phone
  Enable KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL for U+
  Set carrier-specific invalid characters.
  Hide ims apn for some carriers
  Set carrier-specific invalid characters.
  Rename carrier config constant.
  Disable group mms for Korea LGU+
  Disallow non-emergency calls while in ECM mode for Sprint.
  Uneditable enhanced 4g lte mode
  Bug 22748811: Disable MMS for Docomo
  Hide merge call button for korean carriers
  Add delay of 215ms between DTMF tones for Softbank
  Add SBM configuration (44120)
  Enable instant lettering for korean carriers.
  ...

Change-Id: I9a84834b51b71699724317616235173be52d5557
tree: ac2c71aa3858b82669b9d9277b70cb06a013305a
  1. assets/
  2. res/
  3. src/
  4. tests/
  5. Android.mk
  6. AndroidManifest.xml
  7. proguard.flags