sources change (which was incomplete).

Reference: /n/atom/patch/applied/unzipargs
Date: Fri Feb 28 14:34:05 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/gzip/unzip.c	Fri Feb 28 14:32:51 2014
+++ /sys/src/cmd/gzip/unzip.c	Fri Feb 28 14:32:52 2014
@@ -52,7 +52,7 @@
 static void
 usage(void)
 {
-	fprint(2, "usage: unzip [-tsv] [-f zipfile] [file ...]\n");
+	fprint(2, "usage: unzip [-acistTvD] [-f zipfile] [file ...]\n");
 	exits("usage");
 }
 
--- /sys/man/1/gzip	Fri Feb 28 14:32:53 2014
+++ /sys/man/1/gzip	Fri Feb 28 14:32:53 2014
@@ -46,7 +46,7 @@
 .RB [ ... ]
 .PP
 .B unzip
-.RB [ -cistTvD ]
+.RB [ -acistTvD ]
 .RB [ -f
 .IR zipfile ]
 .RI [ file