handle handles closed by other processes

_From [bruen...@google.com](https://code.google.com/u/109494838902877177630/) on November 13, 2013 16:02:15_

We can try to send nudges when we're in the other process.

E.g., in handling NtDuplicateObject for DUPLICATE_CLOSE_SOURCE, look for
the 0th param being another process and nudge it. Looks like the process
handles aren't even checked today: that should be added as well to ensure
the current process is being talked about for local changes.

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=1380_