evolve: add an `--update` flag to `hg evolve` command This patch adds a new `--update` flag which defaults to True. The update flag updates the working directory to the head of evolved revisions after `hg evolve` command. This flag can be used to not update your working directory after `hg evolve` which has been one of the biggest feature request from fig team at Google. To not update your working directory, the user can do `hg evolve --no-update`. If the working directory get obsoleted by evolve command, it will update to the successor. This patch also adds some basic tests for the flag introduced.

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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