evolve: move the bookmarks also when updating to successor (issue5923) When we are on an obsolete node and does `hg evolve`, it updates to it's sucessor, however it does not move the bookmark to the successor. This patch adds logic to make sure we move the bookmark too. Test change demonstrates the fix.

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−# utility to setup pythonpath to point into the tested repository
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−
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−export SRCDIR=`dirname $TESTDIR`
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−if [ -n "$PYTHONPATH" ]; then
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−    export HGTEST_ORIG_PYTHONPATH=$PYTHONPATH
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−    export PYTHONPATH=$SRCDIR:$PYTHONPATH
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−else
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−    export PYTHONPATH=$SRCDIR
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−fi