Add code to retreive the mach port # for each thread in the inferior application's
mach port namespace in addition to the mach port # in examine-threads' own port
namespace, and print it (when -v is used).


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@172867 91177308-0d34-0410-b5e6-96231b3b80d8