Add --no-preserve-owner, which seems to be required by some ports.

Thanks to: Erwin Lansing

usr.bin/cpio/cmdline.c

@@ -91,6 +91,7 @@ static const struct option cpio_longopts[] = {
 	{ "link",		no_argument,	   NULL, 'l' },
 	{ "list",		no_argument,	   NULL, 't' },
 	{ "make-directories",	no_argument,	   NULL, 'd' },
+	{ "no-preserve-owner",	no_argument,  NULL, OPTION_NO_PRESERVE_OWNER },
 	{ "null",		no_argument,	   NULL, '0' },
 	{ "owner",		required_argument, NULL, 'R' },
 	{ "pass-through",	no_argument,	   NULL, 'p' },

usr.bin/cpio/cpio.c

@@ -175,6 +175,9 @@ main(int argc, char *argv[])
 		case 'm': /* POSIX 1997 */
 			cpio->extract_flags |= ARCHIVE_EXTRACT_TIME;
 			break;
+		case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */
+			cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
+			break;
 		case 'O': /* GNU cpio */
 			cpio->filename = optarg;
 			break;

usr.bin/cpio/cpio.h

@@ -94,6 +94,7 @@ int	owner_parse(const char *, int *, int *);
 /* Fake short equivalents for long options that otherwise lack them. */
 enum {
 	OPTION_INSECURE = 1,
+	OPTION_NO_PRESERVE_OWNER,
 	OPTION_QUIET,
 	OPTION_VERSION
 };