- Add support for -k command line option as there is in bzip2(1)

- Bump PORTREVISION

PR:		ports/113397
Submitted by:	Ighighi <ighighi@gmail.com>

archivers/gzip/Makefile

@@ -7,6 +7,7 @@
 
 PORTNAME=	gzip
 PORTVERSION=	1.3.12
+PORTREVISION=	1
 CATEGORIES=	archivers
 MASTER_SITES=	${MASTER_SITE_GNU}
 MASTER_SITE_SUBDIR=	${PORTNAME}

archivers/gzip/files/patch-gzip.1

@@ -0,0 +1,30 @@
+--- gzip.1.orig	Fri Dec  8 14:45:37 2006
++++ gzip.1	Tue Jun  5 21:44:20 2007
+@@ -4,7 +4,7 @@
+ .SH SYNOPSIS
+ .ll +8
+ .B gzip
+-.RB [ " \-acdfhlLnNrtvV19 " ]
++.RB [ " \-acdfhklLnNrtvV19 " ]
+ .RB [ \-S\ suffix ]
+ [
+ .I "name \&..."
+@@ -12,7 +12,7 @@
+ .ll -8
+ .br
+ .B gunzip
+-.RB [ " \-acfhlLnNrtvV " ]
++.RB [ " \-acfhklLnNrtvV " ]
+ .RB [ \-S\ suffix ]
+ [
+ .I "name \&..."
+@@ -223,6 +223,9 @@
+ .TP
+ .B \-h --help
+ Display a help screen and quit.
++.TP
++.B \-k --keep
++Keep (don't delete) input files during compression or decompression.
+ .TP
+ .B \-l --list
+ For each compressed file, list the following fields:

archivers/gzip/files/patch-gzip.c

@@ -0,0 +1,66 @@
+--- gzip.c.orig	Tue Mar 20 01:09:51 2007
++++ gzip.c	Tue Jun  5 21:43:50 2007
+@@ -216,6 +216,8 @@
+    suppresses a "Broken Pipe" message with some shells.  */
+ static int volatile exiting_signal;
+ 
++/* If nonzero, unlink input file on exit. */
++static int remove_ifname = 1;
+ /* If nonnegative, close this file descriptor and unlink ofname on error.  */
+ static int volatile remove_ofname_fd = -1;
+ 
+@@ -243,6 +245,7 @@
+  /* {"encrypt",    0, 0, 'e'},    encrypt */
+     {"force",      0, 0, 'f'}, /* force overwrite of output file */
+     {"help",       0, 0, 'h'}, /* give help */
++    {"keep",       0, 0, 'k'}, /* keep (don't delete) input files */
+  /* {"pkzip",      0, 0, 'k'},    force output in pkzip format */
+     {"list",       0, 0, 'l'}, /* list .gz file contents */
+     {"license",    0, 0, 'L'}, /* display software license */
+@@ -319,6 +322,7 @@
+  "  -f, --force       force overwrite of output file and compress links",
+  "  -h, --help        give this help",
+ /*  -k, --pkzip       force output in pkzip format */
++ "  -k, --keep        keep (don't delete) input files",
+  "  -l, --list        list compressed file contents",
+  "  -L, --license     display software license",
+ #ifdef UNDOCUMENTED
+@@ -423,7 +427,7 @@
+     z_suffix = Z_SUFFIX;
+     z_len = strlen(z_suffix);
+ 
+-    while ((optc = getopt_long (argc, argv, "ab:cdfhH?lLmMnNqrS:tvVZ123456789",
++    while ((optc = getopt_long (argc, argv, "ab:cdfhH?klLmMnNqrS:tvVZ123456789",
+ 				longopts, (int *)0)) != -1) {
+ 	switch (optc) {
+         case 'a':
+@@ -446,6 +450,8 @@
+ 	    force++; break;
+ 	case 'h': case 'H':
+ 	    help(); do_exit(OK); break;
++	case 'k':
++	    remove_ifname = 0; break;
+ 	case 'l':
+ 	    list = decompress = to_stdout = 1; break;
+ 	case 'L':
+@@ -825,7 +831,7 @@
+     if (!to_stdout)
+       {
+ 	sigset_t oldset;
+-	int unlink_errno;
++	int unlink_errno = 0;
+ 
+ 	copy_stat (&istat);
+ 	if (close (ofd) != 0)
+@@ -833,7 +839,8 @@
+ 
+ 	sigprocmask (SIG_BLOCK, &caught_signals, &oldset);
+ 	remove_ofname_fd = -1;
+-	unlink_errno = xunlink (ifname) == 0 ? 0 : errno;
++	if (remove_ifname)
++	  unlink_errno = xunlink (ifname) == 0 ? 0 : errno;
+ 	sigprocmask (SIG_SETMASK, &oldset, NULL);
+ 
+ 	if (unlink_errno)
+
+