Peg the versions of JGit and MINA SSHD to something known

For our needs within Gerrit we can mostly stick to a known version
of these two dependencies.

JGit now has a more recent snapshot, but named with an exact version
number off `git describe`, so we know rely on that so its clear from
the JAR file name in our WAR exactly what version of code was used.

For SSHD we tag the version with a suffix of "-r$SVNREVISION",
but we also put the JARs into our own Gerrit Maven repository,
as they aren't available from any other public Maven repository.

This simplifies the new developer installation guide, as most
users only need to use our own project and can get the rest
off Maven repositories.

Signed-off-by: Shawn O. Pearce <sop@google.com>
4 files changed