Give the full prototype for all ctype functions/macros.

Remove redundant .br.

lib/libc/gen/ctype.3

@@ -1,4 +1,4 @@
-.\"	$NetBSD: ctype.3,v 1.18 2008/04/17 16:24:40 apb Exp $
+.\"	$NetBSD: ctype.3,v 1.19 2009/03/11 12:57:03 joerg Exp $
 .\"
 .\" Copyright (c) 1991 Regents of the University of California.
 .\" All rights reserved.
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)ctype.3	6.5 (Berkeley) 4/19/91
 .\"
-.Dd April 17, 2008
+.Dd March 11, 2009
 .Dt CTYPE 3
 .Os
 .Sh NAME
@@ -53,22 +53,20 @@
 .Lb libc
 .Sh SYNOPSIS
 .In ctype.h
-.Fa int c
-.br
-.Fn isalpha c
-.Fn isupper c
-.Fn islower c
-.Fn isdigit c
-.Fn isxdigit c
-.Fn isalnum c
-.Fn isspace c
-.Fn ispunct c
-.Fn isprint c
-.Fn isgraph c
-.Fn iscntrl c
-.Fn isblank c
-.Fn toupper c
-.Fn tolower c
+.Fn isalpha "int c"
+.Fn isupper "int c"
+.Fn islower "int c"
+.Fn isdigit "int c"
+.Fn isxdigit "int c"
+.Fn isalnum "int c"
+.Fn isspace "int c"
+.Fn ispunct "int c"
+.Fn isprint "int c"
+.Fn isgraph "int c"
+.Fn iscntrl "int c"
+.Fn isblank "int c"
+.Fn toupper "int c"
+.Fn tolower "int c"
 .Sh DESCRIPTION
 The above functions perform character tests and conversions on the integer
 .Ar c .