Support reading the new hex escaped bytea format that will be coming in the 8.5 release.  We already send bytea data in true binary for V3 protocol connections, so there's nothing to be gained there.  For V2 protocol connections bytea send could be sped up to use this escape format as well, but not tonight.
Support reading the new hex escaped bytea format that will be coming
in the 8.5 release.  We already send bytea data in true binary for
V3 protocol connections, so there's nothing to be gained there.  For
V2 protocol connections bytea send could be sped up to use this
escape format as well, but not tonight.

tivv/davepgjdbc,tivv/davepgjdbc