Now that setting an architecture from a mach-o CPU type and subtype doesn't set the OS type, make sure to set it.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@214600 91177308-0d34-0410-b5e6-96231b3b80d8
After you attach, give the process plugin a chance to report back (through
DidAttach) the architecture of the binary you attached to.

<rdar://problem/17891396>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@214603 91177308-0d34-0410-b5e6-96231b3b80d8