The .Fx macro was missing 2.1.7.
Add 2.2.5 to both .Os and .Fx. If I'm wrong about the version
number, no big deal - it can be removed later, but I wanted
to be able to get this into 2.2 so that when I'm using a
2.2 system ome months down the line, man pages intended for (what I
think will be the next 2.2 release) will be formatted properly.
Also fix a typo in a comment.
Add the .Fx macro for specifying FreeBSD releases.
Add a bunch of missing standards to the .St macro.
Add Version 1 AT&T UNIX to .At macro
Updated the ".St -ansiC" macro to report "ISO 9899: 1990 (``ISO C'')"
You can also specify -iso9899, or -isoC. Use -ansiC-89 if you still need
the X3.159-1989 string reported.
Original author: mpp
