games/eif: Document and fix ncurses requirement, use errno.h

The ncurses work is covered by the ncurses infrastructure blanket and the
use of errno.h header over extern errno is "just fix it".

games/eif/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	eif
 PORTVERSION=	1.3.4
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	games ipv6
 MASTER_SITES=	http://www.stack.nl/~marcolz/empire/ \
 		ftp://ftp.stack.nl/pub/users/johans/eif/
@@ -12,7 +12,7 @@ MAINTAINER=	johans@FreeBSD.org
 COMMENT=	Empire text client
 
 GNU_CONFIGURE=	yes
-USES=		shebangfix readline
+USES=		ncurses readline shebangfix
 SHEBANG_FILES=	contrib/*.pl
 
 .include <bsd.port.pre.mk>
@@ -21,5 +21,6 @@ post-patch:
 	@${REINPLACE_CMD} -e '/curout_isapipe/d' ${WRKSRC}/src/data.h
 	@${REINPLACE_CMD} -e '/cd .(pkglibdir)/s/cd /&$$(DESTDIR)/' \
 		${WRKSRC}/contrib/Makefile.in
+	@${REINPLACE_CMD} -e 's@lcurses@lncurses@g' ${WRKSRC}/configure
 
 .include <bsd.port.post.mk>

games/eif/files/patch-src_games.c

@@ -0,0 +1,18 @@
+--- src/games.c.orig	2003-09-25 15:54:27 UTC
++++ src/games.c
+@@ -25,14 +25,13 @@
+ #ifdef	HAVE_UNISTD_H
+ #include	<unistd.h>
+ #endif				/* HAVE_UNISTD_H */
++#include	<errno.h>
+ 
+ #include	"cntl.h"
+ #include	"data.h"
+ #include	"games.h"
+ #include	"print.h"
+ 
+-extern int	errno;
+-
+ #define MAX_GAMES 50
+ 
+ typedef struct {