When running a single test case, lldb.SBDebugger.Terminate() is not being called
because unittest.main() calls sys.exit() before returning.  Fixed by registering
an exit handler for this situation.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@110379 91177308-0d34-0410-b5e6-96231b3b80d8
14 files changed