Merge branch 'jc/describe'

The "--match=<pattern>" option of "git describe", when used with "--all" to allow refs that are not annotated tags to be used as a base of description, did not restrict the output from the command to those that match the given pattern. We may want to have a looser matching that does not restrict to tags, but that can be done as a follow-up topic; this step is purely a bugfix. * jc/describe: describe: --match=<pattern> must limit the refs even when used with --all