add WITHOUT_GZIP for the tools build.

fix libraries

remove stray paren

add WITHOUT_BZ2 for tools build.

don't build NLS if we don't need to

document non-literal format strings

Replace usr.bin/grep with the BSD grep implementation from FreeBSD.

Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc

Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc openssl rpcgen rpcinfo sdiff spell ssh
string2key telnet tn3270 verify_krb5_conf xlint

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Changed the type of some size variables from int to size_t. Added const
qualifiers to some parameters. These changes allow WARNS to be raised to
4.

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 Ne

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.

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Import of BSD-licensed grep by James Howard and Dag-Erling Coïdan
Smørgrav. This import is of version 0.16.