If debugserver fails to interrogate the inferior process CPU type
for any reason, use debugserver own's cputype as a best guess when
we reply to the debugger's qProcessInfo packet or when initializing
our register tables.
<rdar://problem/13406879> 


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@184829 91177308-0d34-0410-b5e6-96231b3b80d8