net/unfs3: Fix build with -fno-common (FreeBSD 13 or later)

* Update MASTER_SITES and WWW as project has moved to GitHub
* Pass maintainership to submitter
* Clean up and reformat Makefile

PR:		258326
Approved by:	meta (mentor)
MFH:		2021Q3
Differential Revision:	https://reviews.freebsd.org/D32220

net/unfs3/Makefile

@@ -1,30 +1,33 @@
 # Created by: Clement Laforet <clement@FreeBSD.org>
 
 PORTNAME=	unfs3
-PORTVERSION=	0.9.22
-PORTREVISION=	1
+DISTVERSION=	0.9.22
+PORTREVISION=	2
 CATEGORIES=	net
-MASTER_SITES=	SF
+MASTER_SITES=	https://github.com/unfs3/unfs3/releases/download/unfs3-${DISTVERSION}/
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	fuz@fuz.su
 COMMENT=	User-space implementation of the NFSv3 server specification
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-BROKEN_FreeBSD_13=	ld: error: duplicate symbol: export_path
-BROKEN_FreeBSD_14=	ld: error: duplicate symbol: export_path
-
 USES=		autoreconf
 GNU_CONFIGURE=	yes
-INSTALL_TARGET=	install-strip
 CONFIGURE_ENV=	YACC=byacc
 
-PLIST_FILES=	sbin/unfsd man/man7/tags.7.gz man/man8/unfsd.8.gz
-
 MAKE_JOBS_UNSAFE=	yes
+INSTALL_TARGET=	install-strip
+
+PLIST_FILES=	man/man7/tags.7.gz \
+		man/man8/unfsd.8.gz \
+		sbin/unfsd
 
 OPTIONS_DEFINE=	CLUSTER_EXT
+CLUSTER_EXT_DESC=	include clustering extensions
 CLUSTER_EXT_CONFIGURE_ON=	--enable-cluster
 
+post-extract:
+	@${RM} ${WRKSRC}/Config/lex.yy.c
+
 .include <bsd.port.mk>

net/unfs3/files/patch-Config_exports.h

@@ -0,0 +1,11 @@
+--- Config/exports.h.orig	2021-09-06 22:17:18 UTC
++++ Config/exports.h
+@@ -22,7 +22,7 @@
+ extern exports	exports_nfslist;
+ /* Options cache */
+ extern int	exports_opts;
+-const char      *export_path; 
++extern const char      *export_path; 
+ extern uint32 	export_fsid;
+ extern uint32   export_password_hash;
+

net/unfs3/files/patch-Config_exports.l

@@ -0,0 +1,18 @@
+--- Config/exports.l.orig	2021-09-06 22:20:46 UTC
++++ Config/exports.l
+@@ -14,7 +14,7 @@
+
+ #define YY_NO_UNPUT
+
+-YYSTYPE yylval;
++extern YYSTYPE yylval;
+ extern int e_error;
+
+ /*
+@@ -67,4 +67,4 @@ OLDNET {IP}"/"{IP}
+ 
+ .			{ return *yytext; }
+ \n			{ return '\n'; }
+-   
+\ No newline at end of file
++   

net/unfs3/pkg-descr

@@ -3,4 +3,4 @@ provides a daemon for the MOUNT and NFS protocols, which are used by NFS
 clients for accessing files on the server.
 Since it runs in user-space, you can use it in a jail.
 
-WWW: http://unfs3.sourceforge.net/
+WWW: https://unfs3.github.io/