[arch-dev-public] [signoff] groff 1.20.1-2

[Aaron Griffin]

Minor change to the local site-tmac files related to the recent man-db
inclusion.

I shut off groff's "SGR" color codes by default, as nothing seems to
use them right. Instead of defining GROFF_NO_SGR to shut off SGR,
define GROFF_SGR to turn it on if you need it.

Debian and Mandriva also seem to do the same - you get much more valid
results searching for GROFF_SGR than GROFF_NO_SGR