gzip: add support for --no-name long option

Add support for --no-name long option. Just silently ignore it
like the short -n option.

This allows to use busybox gzip with Lynx browser.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

archival/bbunzip.c

@@ -335,6 +335,7 @@ static const char gunzip_longopts[] ALIGN1 =
 	"to-stdout\0"           No_argument       "c"
 	"force\0"               No_argument       "f"
 	"test\0"                No_argument       "t"
+	"no-name\0"             No_argument       "n"
 	;
 #endif