graphics/xfig: update to upstream version 3.2.8a

The port update to version 3.2.8 has been provided in PR 252092 by
mjl@luckie.org.nz. This PR will not be closed by this commit, since
it did also contain a port update for the print/fig2dev port.

I have adjusted the update to build patch level "a" of version 3.2.8
and have added missing dependencies and applied a few style changes
to the Makefile as suggested by portlint and portclippy.

graphics/xfig/Makefile

@@ -1,28 +1,33 @@
 # Created by: roberto
 
 PORTNAME=	xfig
-PORTVERSION=	3.2.7a
-PORTREVISION=	1
+PORTVERSION=	3.2.8a
 CATEGORIES=	graphics
 MASTER_SITES=	SF/mcj/
 
 MAINTAINER=	mjl@luckie.org.nz
 COMMENT=	Drawing program for X11
 
-LIB_DEPENDS=	libpng.so:graphics/png \
+LICENSE=	xfig
+LICENSE_NAME=	xfig public license
+LICENSE_FILE=	${FILESDIR}/LICENSE
+LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
+
+LIB_DEPENDS=	libgs.so:print/ghostscript9-agpl-base \
+		libpng.so:graphics/png \
+		libtiff.so:graphics/tiff \
 		libXaw3d.so:x11-toolkits/Xaw3d
 RUN_DEPENDS=	fig2dev:print/fig2dev
 
-USES=		desktop-file-utils gmake jpeg localbase:ldflags \
-		tar:xz xorg
-
-CONFLICTS=	xfig-[12].* xfig-3.1* xfig-3.2.[1234]*
-WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}
-GNU_CONFIGURE=	yes
-USE_XORG=	ice sm x11 xaw xext xi xmu xpm xt
+USES=		desktop-file-utils gmake jpeg localbase:ldflags tar:xz xorg
 USE_CSTD=	gnu89
+USE_XORG=	ice sm x11 xaw xext xi xmu xpm xt
+
+GNU_CONFIGURE=	yes
 CFLAGS+=	-Wno-return-type
 
+CONFLICTS=	xfig-3.1* xfig-3.2.[1234]* xfig-[12].*
+
 OPTIONS_DEFINE=	DOCS
 
 post-patch:

graphics/xfig/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1526255520
-SHA256 (xfig-3.2.7a.tar.xz) = ca89986fc9ddb9f3c5a4f6f70e5423f98e2f33f5528a9d577fb05bbcc07ddf24
-SIZE (xfig-3.2.7a.tar.xz) = 5055456
+TIMESTAMP = 1622907276
+SHA256 (xfig-3.2.8a.tar.xz) = ba43c0ea85b230d3efa5a951a3239e206d0b033d044c590a56208f875f888578
+SIZE (xfig-3.2.8a.tar.xz) = 5380896

graphics/xfig/files/LICENSE

@@ -0,0 +1,14 @@
+FIG : Facility for Interactive Generation of figures
+Copyright (c) 1985-1988 by Supoj Sutanthavibul
+Parts Copyright (c) 1989-2015 by Brian V. Smith
+Parts Copyright (c) 1991 by Paul King
+Parts Copyright (c) 2016-2020 by Thomas Loimer
+
+Any party obtaining a copy of these files is granted, free of charge, a
+full and unrestricted irrevocable, world-wide, paid up, royalty-free,
+nonexclusive right and license to deal in this software and documentation
+files (the "Software"), including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense and/or sell copies
+of the Software, and to permit persons who receive copies from any such
+party to do so, with the only requirement being that the above copyright
+and this permission notice remain intact.

graphics/xfig/files/patch-src_main.c

@@ -1,11 +0,0 @@
---- src/main.c.orig	2018-04-04 21:07:37 UTC
-+++ src/main.c
-@@ -631,7 +631,7 @@ struct  geom   geom;
- int setup_visual (int *argc_p, char **argv, Arg *args);
- void get_pointer_mapping (void);
- 
--void main(int argc, char **argv)
-+int main(int argc, char **argv)
- {
-     Widget	    children[NCHILDREN];
-     XEvent	    event;