tests/testlib/obsmarker-common.sh

posixworker: avoid creating workers that end up getting no work

If `workers` (the detected or configured number of CPUs) is greater
than the number of work items, then some of the workers end up getting
0 work items. Let's not create such workers.

Differential Revision: https://phab.mercurial-scm.org/D8927

mkcommit() {
   name="$1"
   shift
   echo "$name" > "$name"
   hg add "$name"
   hg ci -m "$name" "$@"
}

getid() {
   hg log --hidden --template '{node}\n' --rev "$1"
}

cat >> $HGRCPATH <<EOF
[alias]
debugobsolete=debugobsolete -d '0 0'
EOF