GitLab

This script is not nearly secure enough to be open to anyone in
the world

Allow the SSH and R/O clone URLs to be passed as options

Also add a URL for the repo's web presence

These are all intended to be used when integrated with tools like
gitlab

This runs a simple webserver to be called as a project hook from
gitlab. It will eventually (doesn't yet) call gitmail and pull
much of the configuration it needs from the gitlab APIs.

This provides better backward compatibility: it avoids the accidental
dependency on Python 2.7, which is not available under (e.g.) FreeBSD 8.2.

make more sense.

as little of that as possible, so that our images work everywhere.

1. kpartx does not do its own locking, so must protect it from
   concurrent runs during setup.

2. Allow mulitple XEN hosts (up to 4) to set up concurrently via new
   TBScriptLock() shared lock, but revert to exclusive lock if an
   image needs to created or modified.

3. Convert root disk (XEN-STD) to a plain NDZ file from raw LVM bits,
   so that we get some benefit from the buffer cache.

a different error code.

path and since it takes too long, causes the node to get rebooted
when libreboot thinks it has failed.

the same field in the users table, so that clients know to update
users.

locks in addition to the default exclusive mode locks, which is
handy for allowing multiple containers to set up in parallel
since in general they won't be changing anything, just reading.

What a mess.  Conflicts, syntax errors, the works conspired to keep this
from going in.