evolve: abort if deciding resolution parent is ambiguous While solving content-divergence, it could be hard to decide which cset should be treated as a resolution parent if there are multiple successors of divergent cset. i.e split case. But we are planning to make some update in handling this split case: 1) consider highest one if all splitted csets are in a single topological branch 2) still need to decide if 1) doesn't apply

# utility to setup pythonpath to point into the tested repository

export SRCDIR="`dirname $TESTDIR`"
if [ -n "$PYTHONPATH" ]; then
    export HGTEST_ORIG_PYTHONPATH=$PYTHONPATH
    if uname -o | grep -q Msys; then
        export PYTHONPATH="$SRCDIR;$PYTHONPATH"
    else
        export PYTHONPATH=$SRCDIR:$PYTHONPATH
    fi
else
    export PYTHONPATH=$SRCDIR
fi