Update drawterm to the latest version.

- switch to using 9front's git server
- update license marker to MIT

OK from Stanley Lieber (MAINTAINER)

plan9/drawterm/Makefile

@@ -1,24 +1,24 @@
-# $OpenBSD: Makefile,v 1.16 2020/05/23 15:34:57 abieber Exp $
+# $OpenBSD: Makefile,v 1.17 2021/07/20 16:11:32 abieber Exp $
 
 ONLY_FOR_ARCHS=	i386 amd64 powerpc sparc64 mips64 mips64el arm
 
 COMMENT=	Plan9 terminal emulator
 
-V=		8fd96772eb02
-DISTNAME=	drawterm-20200427
-DISTFILES=	${DISTNAME}${EXTRACT_SUFX}{${V}${EXTRACT_SUFX}}
-WRKDIST=	${WRKDIR}/drawterm-${V}
+V=		c97fe4693f6112504d6f13fab46f7cc8b27685c1
+DISTNAME=	drawterm-20210628
+DISTFILES=	${DISTNAME}${EXTRACT_SUFX}{snap${EXTRACT_SUFX}}
+WRKDIST=	${WRKDIR}/drawterm
 EXTRACT_SUFX=	.tar.gz
 
 CATEGORIES=	plan9
 
 HOMEPAGE=	http://drawterm.9front.org/
 
-MASTER_SITES=	https://code.9front.org/hg/drawterm/archive/
+MASTER_SITES=	http://git.9front.org/git/plan9front/drawterm/${V}/
 
 MAINTAINER=	Stanley Lieber <sl@stanleylieber.com>
 
-# Lucent Public License Version 1.02
+# MIT
 PERMIT_PACKAGE=	Yes
 
 WANTLIB=	X11 c pthread sndio

plan9/drawterm/distinfo

@@ -1,2 +1,2 @@
-SHA256 (drawterm-20200427.tar.gz) = GRPfPZwop4SwcuLMFtM3bMU3ZWD7rZqr1pQMVvxO3P0=
-SIZE (drawterm-20200427.tar.gz) = 585268
+SHA256 (drawterm-20210628.tar.gz) = ivbgvmT/kVT0aKqqz+Q4gut8Yqkgh1LG+iJlYE1S0p4=
+SIZE (drawterm-20210628.tar.gz) = 590858