Update mclinker with upstream patches

- Pull upstream mclinker changes up to
  a7afcb5854708dd0684d7f979af2d9f395b4cbc4
- Update Android.mk in lib/Support and tools/mcld/ to handle the new
  option parser.

Change-Id: I3a3aa2ea4c5e2d59caecc8aba3bf3abf087c0986
42 files changed