client.nudge_ex_FLAKY hanging on win8 bot since r1965

_From [rnk@google.com](https://code.google.com/u/rnk@google.com/) on March 11, 2013 14:34:39_

Completed (but failed): http://build.chromium.org/p/client.dynamorio/builders/win-8-dr/builds/205 Failed to complete (hang after 20min with no output): http://build.chromium.org/p/client.dynamorio/builders/win-8-dr/builds/206 The problem isn't immediately obvious. I can't tell which test is hanging.

I'm going to watch it run on rdp to see if there's a msgbox or something.

_Original issue: http://code.google.com/p/drmemory/issues/detail?id=1167_