fix exception handling on windows.
move win32 code into util_win32.py.
#!/bin/shhg inittouch unknowntouch ahg add ahg ci -m "1" -d "1000000 0"touch bhg add bhg ci -m "2" -d "1000000 0"echo %% Should show unknownhg statushg revert -r 0echo %% Should show unknown and b removedhg statusecho %% Should show a and unknownls