* Unbreak groff manuals by using tbl(1); reported by pascal@.
* Deal with our Mdocdate cvs keyword; as designed by jmc@ in 2007.
* Use troffrc for OpenBSD config changes; suggested by Werner Lemberg.
* Unbreak the hdtbl examples; from upstream.
* Volume names in man(7) page headers; suggested by Yuri Pankov.
* Update various string tables; coordinated with upstream.
* Add a README explaining local changes; using feedback from pascal@.
* Better description and bump.
ok pascal@, and tested in an i386 bulk build by naddy@, thanks!
because mandoc(1) doesn't like them, with the exception
of groff_mdoc(7), which is derived from the traditional
mdoc.samples(7) and which is just fine with mandoc(1).
Problem reported and fix tested by <Pascal dot Stumpf at cubes dot de>.
naddy@ and deraadt@ agree with the general direction
