In the hullaballoo with moving stuff back and forth out of the docs/ directory,

In the hullaballoo with moving stuff back and forth out of the docs/ directory,
and trying to figure out the right way to preserve the old version history, this
file's version history prior to the first move into docs/ got wiped.  I
introduced this file into the project after 1.0.3 was released, and was the only
one to modify it until after the 1.0.4 release.  The post-1.0.4 changes have
survived in docs/README.developers, so I just need to check in the 1.0.4 version
and tag it as such, then remove it again, to make a `cvs checkout' of nmh 1.0.4
work again.