Pull up following revision(s) (requested by pettai in ticket #1889):
	distrib/sets/lists/base/mi: revision 1.1049
	distrib/sets/lists/man/mi: revision 1.1449
	usr.bin/gzip/Makefile: revision 1.17
	usr.bin/gzip/Makefile: revision 1.18
	usr.bin/gzip/zmore: revision 1.4
	usr.bin/gzip/zmore.1: revision 1.4
Added zless(1) - comes in the lastest version of zmore(1) from OpenBSD
(OKed by tron@)
Add zfgrep that fell off from last update