tests/bzr-definitions

revset: remove order information from tree (API)

Keeping `order` in tree makes AST operation harder. And there could be
invalid cases if trees could be generated and compounded freely, like:

  SetA(order=define) & SetB(order=define)
                                  ^^^^^^ couldn't be satisfied

This patch changes the code to calculate order on the fly, during tree
traversal. Optimization of reordering `and` arguments is preserved by
introducing a new internal operation `flipand`.

.. api::

   revset.stringset() now takes 'order' as the last argument.

Differential Revision: https://phab.mercurial-scm.org/D451

# this file holds the definitions that are used in various bzr tests

TERM=dumb; export TERM
echo '[extensions]' >> $HGRCPATH
echo 'convert = ' >> $HGRCPATH

glog()
{
    hg log -G --template '{rev}@{branch} "{desc|firstline}" files: {files}\n' "$@"
}

manifest()
{
    echo "% manifest of $2"
    hg -R $1 manifest -v -r $2
}