Virgin import of GNU Grep 2.3 [trimmed down].

svn path=/vendor/misc-GNU/dist1/; revision=53574

gnu/usr.bin/grep/AUTHORS

@@ -20,10 +20,22 @@ non-matching text before calling the regexp matcher was originally due
 to James Woods.  He also contributed some code to early versions of
 GNU grep.
 
-Finally, I would like to thank Andrew Hume for many fascinating discussions
+Mike Haertel would like to thank Andrew Hume for many fascinating discussions
 of string searching issues over the years.  Hume & Sunday's excellent
 paper on fast string searching (AT&T Bell Laboratories CSTR #156)
 describes some of the history of the subject, as well as providing
 exhaustive performance analysis of various implementation alternatives.
 The inner loop of GNU grep is similar to Hume & Sunday's recommended
 "Tuned Boyer Moore" inner loop.
+
+More work was done on regex.[ch] by Ulrich Drepper and Arnold
+Robbins. Regex is now part of GNU C library, see this package
+for complete details and credits.
+
+Arnold Robbins contributed to improve dfa.[ch]. In fact
+it came straight from gawk-3.0.3 with small editing and fixes.
+
+Many folks contributed see THANKS, if I omited someone please
+send me email.
+
+Alain Magloire is the current maintainer.

gnu/usr.bin/grep/COPYING

@@ -2,7 +2,7 @@
 		       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                          675 Mass Ave, Cambridge, MA 02139, USA
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -279,7 +279,7 @@ POSSIBILITY OF SUCH DAMAGES.
 
 		     END OF TERMS AND CONDITIONS
 
-	Appendix: How to Apply These Terms to Your New Programs
+	    How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -291,7 +291,7 @@ convey the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
     <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 19yy  <name of author>
+    Copyright (C) <year>  <name of author>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -305,14 +305,15 @@ the "copyright" line and a pointer to where the full notice is found.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
 
 Also add information on how to contact you by electronic and paper mail.
 
 If the program is interactive, make it output a short notice like this
 when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision version 69, Copyright (C) year  name of author
     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.

gnu/usr.bin/grep/NEWS

@@ -1,3 +1,67 @@
+Version 2.3:
+
+  - When searching a binary file FOO, grep now just reports
+    `Binary file FOO matches' instead of outputting binary data.
+    This is typically more useful than the old behavior,
+    and it is also more consistent with other utilities like `diff'.
+    A file is considered to be binary if it contains a NUL (i.e. zero) byte.
+
+    The new -a or --text option causes `grep' to assume that all
+    input is text.  (This option has the same meaning as with `diff'.)
+    Use it if you want binary data in your output.
+
+  - `grep' now searches directories just like ordinary files; it no longer
+    silently skips directories.  This is the traditional behavior of
+    Unix text utilities (in particular, of traditional `grep').
+    Hence `grep PATTERN DIRECTORY' should report
+    `grep: DIRECTORY: Is a directory' on hosts where the operating system
+    does not permit programs to read directories directly, and
+    `grep: DIRECTORY: Binary file matches' (or nothing) otherwise.
+
+    The new -d ACTION or --directories=ACTION option affects directory handling.
+    `-d skip' causes `grep' to silently skip directories, as in grep 2.2;
+    `-d read' (the default) causes `grep' to read directories if possible,
+    as in earlier versions of grep.
+
+  - The MS-DOS and Microsoft Windows ports now behave identically to the
+    GNU and Unix ports with respect to binary files and directories.
+
+Version 2.2:
+
+Bug fix release.
+
+  - Status error number fix.
+  - Skipping directories removed.
+  - Many typos fix.
+  - -f /dev/null fix(not to consider as an empty pattern).
+  - Checks for wctype/wchar.
+  - -E was using the wrong matcher fix.
+  - bug in regex char class fix
+  - Fixes for DJGPP
+
+Version 2.1:
+
+This is a bug fix release(see Changelog) i.e. no new features.
+
+  - More compliance to GNU standard.
+  - Long options.
+  - Internationalisation.
+  - Use automake/autoconf.
+  - Directory hierarchy change.
+  - Sigvec with -e on Linux corrected.
+  - Sigvec with -f on Linux corrected.
+  - Sigvec with the mmap() corrected.
+  - Bug in kwset corrected.
+  - -q, -L and -l stop on first match.
+  - New and improve regex.[ch] from Ulrich Drepper.
+  - New and improve dfa.[ch] from Arnold Robbins.
+  - Prototypes for over zealous C compiler.
+  - Not scanning a file, if it's a directory
+    (cause problems on Sun).
+  - Ported to MS-DOS/MS-Windows with DJGPP tools.
+
+See Changelog for the full story and proper credits.
+
 Version 2.0:
 
 The most important user visible change is that egrep and fgrep have