evolve: run in a single transaction This speeds up `hg evolve --all` of a stack of 24 commits in the hg repo from 11.5s to 3.7s (3x). As can be seen in the tests, it also avoid some warnings about transiently unstable commits.

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. $TESTDIR/testlib/pythonpath.sh

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mkcommit() {

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   echo "$1" > "$1"

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   hg add "$1"

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   hg ci -m "$1"

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}

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getid() {

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

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}

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cat >> $HGRCPATH <<EOF

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[alias]

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debugobsolete=debugobsolete -d '0 0'

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EOF