Update gdb to 7.11. am: c62e49a490 am: 250e718df8
am: 3bd221dc3a

* commit '3bd221dc3a59f37859156b0cd8d6ffaec2a0d149':
  Update gdb to 7.11.

Change-Id: I240c5a40c68a6c469cb24e25b895a938bdcbc104