convert: workaround for cvsps.cache under Windows
In non-cygwin environment, cvsps fails to create its cache directory and redirect its output to stderr. Just ignore the error and capture stderr as well.
#!/bin/sh
#
# test for issue351
# Environement setup for MQ
echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
#Repo init
hg init
hg qinit
echo b > b
hg ci -A -m foo
echo cc > b
hg qnew -f foo.diff
echo b > b
hg qrefresh
hg debugindex .hg/store/data/b.i