Add the GetNumThreadOriginExtendedBacktraceTypes and
GetThreadOriginExtendedBacktraceTypeAtIndex methods to
SBProcess.

Add documentation for the GetQueueName and GetQueueID methods
to SBThread.
<rdar://problem/15314369> 


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@194063 91177308-0d34-0410-b5e6-96231b3b80d8