2BSD/src/Mail/READ_ME

In order to compile Mail for your machine, you must make sure
that you have the right versions of "local.c" and "local.h"
These have the naming convention that the non-prefixed version is
a copy of a real version and may be clobbered.  The real version are
prefixed with single characters with the following scheme:

	v	Vax 11 version (really version 7)
	c	EECS Cory hall version
	i	Ingres (virgin version 6)

You also will need the correct makefile.  These are named with suffixes:
.vax for Vax, .cory for Cory, and .ing for ingres.

Note that if you are non Version 7 you will need _stat.c which makes
the Version 6 stat() call look like that of Version 7.