Document the fact that basename and dirname conform to 1003.2-1992.

Remove description of old, pre-POSIX behavior wrt. suffixes.

usr.bin/basename/basename.1

@@ -33,7 +33,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     from: @(#)basename.1	6.7 (Berkeley) 6/27/91
-.\"	$Id: basename.1,v 1.2 1993/08/01 07:34:19 mycroft Exp $
+.\"	$Id: basename.1,v 1.3 1993/08/16 22:03:50 jtc Exp $
 .\"
 .Dd June 27, 1991
 .Dt BASENAME 1
@@ -57,14 +57,6 @@ and a
 .Ar suffix ,
 if given.
 The resulting filename is written to the standard output.
-If
-.Ar string
-ends in the slash character,
-.Ql / ,
-or is the same as the
-.Ar suffix
-argument,
-a newline is output.
 A non-existant suffix is ignored.
 .Pp
 .Nm Dirname
@@ -88,11 +80,12 @@ and
 .Nm dirname
 exit 0 on success, and >0 if an error occurs.
 .Sh SEE ALSO
-.Xr csh 1
+.Xr csh 1 ,
 .Xr sh 1
 .Sh STANDARDS
 The
 .Nm basename
 and
 .Nm dirname
-functions are expected to be POSIX 1003.2 compatible.
+utilities conform to
+.St -p1003.2 .