make it work as a tool

Add zfgrep that fell off from last update

Added zless(1) - comes in the lastest version of zmore(1) from OpenBSD
(OKed by tron@)

branches: 1.16.2; 1.16.4; 1.16.8;
Add a few explicit casts for sign mismatches.

remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

Add lzma (.xz) support. Somehow this does not decode after the first read yet.

branches: 1.13.4;
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

branches: 1.12.2; 1.12.4; 1.12.6; 1.12.12;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.12;
Add new Makefile knob, USE_FORT, which extends USE_SSP by turning on the
FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.

This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.

This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.

Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.

apply -Wno-pointer-sign with GCC4.

WARNS=3: add some const poisoning, and sort out local variable
definitions shadowing other variables.

Pass storage for file names into the file_compress and file_uncompress
functions, so that we don't run the risk of leaking memory. Remove a global
variable that's no longer needed.

branches: 1.8.2;
port simonb's bzip2 support.
misc cleanups.

Add a BSD licensed zgrep written by me.
Much nicer than the old one, if I may say so.

Thanks go to atatat for testing and suggestions.

fix an error in the previous

zdiff is also zcmp (from wiz)

install gzexe, zdiff, zforce, zmore and znew scripts and manual pages.

XXX: now only missing zgrep.

remove one extra backslash from MLINKS

install gunzip, zcat & gzcat links.

branches: 1.1.1;
Initial revision