Summary:
Allow the pull daemon to take a list of repositories. By default, pull all repositories.
Make some effort to respect pull frequencies, although we'll necessarily suffer a bit if running with only one process.
NOTE: We still launch one discovery daemon per working copy, so this only cuts the daemon count in half.
Test Plan:
- Ran `phd debug pulllocal`, verified behavior.
- Ran `pull.php P MTEST SVNTEST --trace`, verified it pulled the repos and ran the right commands.
- Ran `phd repository-launch-master`, verified the right daemons launched, checked daemon console.
- Ran `phd repository-launch-readonly`, verified the right daemon launched, checked daemon console.
Reviewers: btrahan, csilvers, davidreuss
Reviewed By: csilvers
CC: aran
Differential Revision: https://secure.phabricator.com/D2418
