testcompat: update output for Mercurial 4.3
Lets of minor update + one major update to tests/test-evolve-phase-divergence.t
since all hashed chance (different instability name).
# utility to setup pythonpath to point into the tested repository
export SRCDIR=`dirname $TESTDIR`
if [ -n "$PYTHONPATH" ]; then
export HGTEST_ORIG_PYTHONPATH=$PYTHONPATH
export PYTHONPATH=$SRCDIR:$PYTHONPATH
else
export PYTHONPATH=$SRCDIR
fi