process: on Win32, we can still end up with Error 6 (invalid handle) in
some cases when trying to make the child process inherit handles.  Instead
of doing magical things, just use the same code path
subprocess.Popen._get_handles uses to catch problems and fake our handles
instead.
http://bugs.activestate.com/show_bug.cgi?id=100022

(integrated from komodo (trunk) change 81359 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13411 b87d16e7-d29f-4ee1-b5ec-817d645d335f