Fix Windows os.popen bug with interleaved stdout/stderr output
See python bug 1366 "popen spawned process may not write to stdout under windows" for more details.
marked working directory as branch a
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
marked working directory as branch b
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
marked working directory as branch c
c 5:5ca481e59b8c
a 1:dd6b440dd85a
b 4:22df7444f7c1 (inactive)
default 0:19709c5a4e75 (inactive)
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c 5:5ca481e59b8c
a 1:dd6b440dd85a