japanese/mh: fix build on 16.0-current/15.0-stable and add LICENSE

${WRKSRC}/uip/vmh.c includes <term.h> (a part of ncurses).
And on FreeBSD term.h includes <termios.h> with ncurses-6.5.

But since ncurses-6.6 term.h doesn't include termios/termio/sgttyb headers
and doesn't define some related symbols.  These directive has been excluded
with "#ifdef NCURSES_INTERNALS".

PR:		293936
MFH:		2026Q2
See also:	https://forums.gentoo.org/viewtopic-t-1100154-start-0-postdays-0-postorder-asc-highlight-.html
Event:		Wiesbaden Hackathon 202604

japanese/mh/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	mh
 PORTVERSION=	${VERSION}.j${JP_VERSION}
-PORTREVISION=	8
+PORTREVISION=	9
 CATEGORIES=	japanese mail
 MASTER_SITES=	ftp://ftp.laic.u-hyogo.ac.jp/pub/net/mh/
 DISTNAME=	${PORTNAME}-${VERSION}-JP-${JP_VERSION}
@@ -8,6 +8,9 @@ DISTNAME=	${PORTNAME}-${VERSION}-JP-${JP_VERSION}
 MAINTAINER=	CQG00620@nifty.ne.jp
 COMMENT=	Rand MH mail handling system + Japanese patches
 
+LICENSE=	PD
+LICENSE_FILE=	${WRKSRC}/READ-ME
+
 BUILD_DEPENDS=	jless:japanese/less
 RUN_DEPENDS=	jless:japanese/less
 

japanese/mh/files/patch-uip_vmh.c

@@ -1,16 +1,27 @@
 --- uip/vmh.c.orig	2001-04-21 11:16:49 UTC
 +++ uip/vmh.c
-@@ -116,6 +116,13 @@ void     __cputchar __P((int));
+@@ -42,6 +42,10 @@ static char ident[] = "@(#)$Id: vmh.c,v 1.20 1993/08/2
+ #endif
+ #undef	OK			/* tricky */
+ #ifdef	TERMINFO
++#include <sys/param.h>
++#if defined(__FreeBSD__) && __FreeBSD_version > 1500068
++#define NCURSES_INTERNALS
++#endif
+ #include <term.h>	/* variables describing terminal capabilities */
+ #if defined(HAVE_TCGETATTR) && !defined(TCGETATTR)
+ #define TCGETATTR
+@@ -115,6 +119,13 @@ void     __cputchar __P((int));
+ 
  
  #define	XYZ			/* XXX */
- 
++
 +#if defined(__FreeBSD__) && __FreeBSD__ >= 5
 +struct ldat
 +{
 +	unsigned long	*text;
 +};
 +#endif
-+
+ 
  /*  */
  
- static struct swit switches[] = {