Fixed lock when tests are run in --coverage mode. (CNY-1038)
Fixed lock when tests are run in --coverage mode. (CNY-1038)

The server was receiving the USR2 from the testcase process, and _saveState
(from conary/lib/coveragehook.py) was run, but sys.exit() was ignored (and,
more importantly, the wrapped os._exit was not called).

Calling os._exit directly seems to solve the issue.
The server process

fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary