lang/pbasic: update 2.0 -> 2.1, unbreak, add LICENSE

PR:		218494
Submitted by:	jhs@berklix.com (maintainer)

lang/pbasic/Makefile

@@ -1,19 +1,18 @@
-# Created by: Julian Stacey <jhs@FreeBSD.org>
+ # Created by: Julian H. Stacey <jhs@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	pbasic
-PORTVERSION=	2.0
+PORTVERSION=	2.1
 CATEGORIES=	lang
 MASTER_SITES=	ftp://ftp.berklix.org/pub/FreeBSD/ports/distfiles/ \
 		http://www.berklix.com/~jhs/ftp/distfiles/
-DISTNAME=	${PORTNAME}-${PORTVERSION}-950813
+DISTNAME=	${PORTNAME}-${PORTVERSION}-2017-04-08
 
 MAINTAINER=	jhs@berklix.com
 COMMENT=	Phil Cockroft's Basic Interpreter (previously Rabbit Basic)
-# Ask maintainer if you want newer sources or author's latest e-mail
-#  (which is currently "phil@cockcroft.de")
+#		Author of generic sources: "phil@cockcroft.de"
 
-BROKEN_aarch64=	Fails to link: missing sbrk
+LICENSE=	PD
 
 ALL_TARGET=	freebsd
 MAKEFILE=	makefile
@@ -34,3 +33,4 @@ do-install:
 	${INSTALL_MAN} ${WRKSRC}/docs/basic.1 ${STAGEDIR}${PREFIX}/man/man1/pbasic.1
 
 .include <bsd.port.mk>
+

lang/pbasic/distinfo

@@ -1,2 +1,3 @@
-SHA256 (pbasic-2.0-950813.tar.gz) = 1eb9331aba18a57938e5477066fbcff654e470f4cfb5ac7cef0c719c096f40e5
-SIZE (pbasic-2.0-950813.tar.gz) = 137363
+TIMESTAMP = 1529401546
+SHA256 (pbasic-2.1-2017-04-08.tar.gz) = 8cbc306e52bbae982ce5c746e7f75002731a4411416ec85a698c5ee623c73f55
+SIZE (pbasic-2.1-2017-04-08.tar.gz) = 138529

lang/pbasic/pkg-descr

@@ -1,7 +1,7 @@
-This is v2.0 of a Basic Interpreter by Phil J. A. Cockcroft
+This is v2.1 of a Basic Interpreter by Phil J. A. Cockcroft
 earlier versions used to be known as Rabbit Basic.
 
-According to an earlier lisencing document:
+According to an earlier licensing document:
 
 ===
 This code is being put in the Public Domain since I will soon loose