Question about
"""
Subject: [PATCH v50 5/8] Add initdb option to initialize cluster with
non-standard xid/mxid/mxoff.
To date testing database cluster wraparund was not easy as initdb has always
inited it with default xid/mxid/mxoff. The option to specify any valid
xid/mxid/mxoff at cluster startup will make these things easier.
"""
Doesn't pg_resetwal already provide that functionality, or at least some
of it?
