stack: start indexing at 't1' instead of 't0'
I think 't0' could have special meaning (eg: before 't1', but still with topic
activated) so let's keep room for that. Indexing from 1 is not crazy anyway.
#!/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))/hgext3rd/topic" >> $HGRCPATH