topic: introduce a 'ngtip' concept
The concept is to be massively used in naming and default destination logic.
The name is horrible so that people find a better one.
#!/bin/sh
# This file holds logic that is used in many tests.
# It can be called in a test like this:
# $ . "$TESTDIR/testlib"
# Enable obsolete markers and enable extensions
cat >> $HGRCPATH << EOF
[experimental]
evolution=createmarkers,exchange
[extensions]
rebase=
EOF
echo "topic=$(echo $(dirname $TESTDIR))/src/topic" >> $HGRCPATH