am 848b54ae: Merge "Support MMS with empty subject"

* commit '848b54ae56cb8fa8264f65365db65dc7f1921f81':
  Support MMS with empty subject
tree: 316ee968bdff016da55c449f3cb1d596082a7bc8
  1. src/
  2. Android.mk
  3. CleanSpec.mk