Import of our changes to grep developed in othersrc. A very

brief summary:

* Add NetBSD RCS Ids. Change to use a date based version number.
* Remove unused variables and functions.
* Move towards NetBSD code style.
* Add missing GNU options (except for --include, --exclude and
	--line-buffered)
* Bug fixes 
* Bug fixes and changes from OpenBSD's src/usr.bin/grep

A full list of changes can be viewed in the NetBSD CVS repository at
othersrc/usr.bin/grep. A ChangeLog is also available at:
	ftp://ftp.NetBSD.org/pub/NetBSD/misc/cjep/grep-ChangeLog.txt

If you want to help out, please let me (cjep@) know so that we can 
organise our efforts efficiently.