news/trn4: document ncurses requirement (USES+=ncurses)

Also link with libncurses instead of libcurses or libtermlib.

approved by:	infrastructure blanket

news/trn4/Makefile

@@ -13,6 +13,8 @@ COMMENT=	Version 4.0 of the threaded readnews newsreader
 
 CONFLICTS_INSTALL=trn-3.[0-9]* cnews-* s-news-[0-9]*
 
+USES=		ncurses
+
 .include <bsd.port.pre.mk>
 
 post-patch:

news/trn4/files/patch-Configure

@@ -0,0 +1,16 @@
+--- Configure.orig	2010-09-02 06:12:26 UTC
++++ Configure
+@@ -4920,10 +4920,10 @@ x)
+ esac
+ case "$xxx" in
+ x)
+-	xxx=`./loc libcurses.$so'*' x $libpth`
++	xxx=`./loc libncurses.$so'*' x $libpth`
+ 	case "$xxx" in
+-	/usr/lib*|/lib*)
+-		termlib='-lcurses'
++	/usr/lib*|/lib*|$prefix/lib*)
++		termlib='-lncurses'
+ 		d_havetlib="$define"
+ 		echo "Terminfo library found." >&4
+ 		;;

news/trn4/scripts/preconf

@@ -288,7 +288,7 @@ subscriptions=''
 sysman='/usr/share/man/man1'
 tail='/usr/bin/tail'
 tee=''
-termlib='-lcursus'
+termlib='-lncurses'
 test='/bin/test'
 threaddir='remote'
 tk='undef'