revert Sendmail?

[Carl Brewer <carl%bl.echidna.id.au@localhost>]

G'day,
I just blindly ran an update and it updated Sendmail from 8.14.x to 
8.15.1.  This has caused a problem because of this :

Incompatible Change: Use uncompressed IPv6 addresses by default,
		i.e., they will not contain "::".  For example,
		instead of ::1 it will be 0:0:0:0:0:0:0:1.  This
		permits a zero subnet to have a more specific match,
		such as different map entries for IPv6:0:0 vs IPv6:0.
		This change requires that configuration data
		(including maps, files, classes, custom ruleset,
		etc) must use the same format, so make certain such
		configuration data is updated before using 8.15.
		As a very simple check search for patterns like
		'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'. If necessary,
		the prior format can be retained by compiling with:
		APPENDDEF(`conf_sendmail_ENVDEF', `-DIPV6_FULL=0')
		in your devtools/Site/site.config.m4 file.

Can anyone point me at a quick way to revert Sendmail back to 
8.14.whateveritwas?  My sendmail-skills are so rusty that ll my old 
configs look like perl^H^H^H^Hline noise. help please!

Carl