Add irmin.unix dependency

Signed-off-by: John Else <john.else@citrix.com>
Add module Db_git

Signed-off-by: John Else <john.else@citrix.com>
Add DB converter

Signed-off-by: John Else <john.else@citrix.com>
Merge pull request #1 from johnelse/dbconvert

First steps towards creating a xapi db converter
Schema now uses sexp

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Add a schema

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Load the database schema exported from xapi

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Write the table / row / key / value to Irmin

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Serialise conversion (avoiding running out of fds etc)

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Add the database in one large transaction

Signed-off-by: David Scott <dave.scott@eu.citrix.com>