* doc/Makefile (clean): Include more index files.

* doc/Makefile (clean): Include more index files.
Add rule texinfo->dvi.

* doc/groff.texinfo: Added new index `op' for operators.  More
info on end of sentence characters.  More use of @Deffn.

* */*.man: Adding a note that a whitespace can be inserted between
a command line option and its parameter -- we are using GNU getopt.

* src/roff/groff/groff.man: Add example of `-m mandoc'.

Correct anachronism of calling the man macro file with `-man'
instead of `-m man' etc.

* tmac/tmac.man, tmac/tmac.mandoc, tmac/tmac.markup, tmac/tmac.mdoc,
tmac/tmac.me, tmac/tmac.ms: New files tmac.m<package> which simply
load tmac.<package>.

* tmac/Makefile.sub: Updated.  Take care of $(tmac_an_prefix) etc.

* NEWS: Updated.

* doc/groff.texinfo: Updated.

* tmac/groff_man.man: Copyright added.

(I've basically taken groff_man.man).  Introducing new indices `ma'