Tag build swift-DEVELOPMENT-SNAPSHOT-2016-10-26-a
Merge remote-tracking branch 'origin/swift-3.1-branch' into stable

* origin/swift-3.1-branch:
  Next set of additional error checks for invalid Mach-O files for bad load commands that use the Mach::dyld_info_command type for the load commands that are currently use in the MachOObjectFile constructor.