Minor fix

* src/tar.c (main): Mention --delete in the error message.
* THANKS: Update

THANKS

@@ -361,6 +361,7 @@ Mike Walker		M.D.Walker@larc.nasa.gov
 Milan Hodoscek		milan@kihp6.ki.si
 Minh Tran-Le		tranle@intellicorp.com
 Mitsuaki Masuhara	masuhara@mcprv.mec.mei.co.jp
+Natalie Alifanova	na@nxc.no
 Nate Eldredge		nate@cs.hmc.edu
 Nathan Stratton Treadway nathanst+bugtar@ontko.com
 Neil Faulks		neil@dcs.kcl.ac.uk

src/tar.c

@@ -2633,7 +2633,7 @@ main (int argc, char **argv)
     {
     case UNKNOWN_SUBCOMMAND:
       USAGE_ERROR ((0, 0,
-		    _("You must specify one of the '-Acdtrux' or '--test-label'  options")));
+		    _("You must specify one of the '-Acdtrux', '--delete' or '--test-label' options")));
 
     case CAT_SUBCOMMAND:
     case UPDATE_SUBCOMMAND: