Fix build with clang/libc++

Fix regeneration of the configure [1]
While here switch to lua 5.2

Reported by:	mat [1]

net/linknx/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	linknx
 PORTVERSION=	0.0.1.30
+PORTREVISION=	1
 CATEGORIES=	net
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/${PORTNAME}-${PORTVERSION}
 
@@ -16,7 +17,8 @@ BUILD_DEPENDS=	${LOCALBASE}/lib/libargp.a:${PORTSDIR}/devel/argp-standalone
 
 USES=	gmake
 GNU_CONFIGURE=	yes
-USE_AUTOTOOLS=	autoconf
+USE_AUTOTOOLS=	autoconf aclocal automake
+AUTOMAKE_ARGS=	--add-missing --copy --force-missing --foreign
 CONFIGURE_ARGS+=CFLAGS="-I${LOCALBASE}/include" \
 		LDFLAGS="-I${LOCALBASE}/include -L/${LOCALBASE}/lib"
 
@@ -25,7 +27,7 @@ OPTIONS_DEFAULT=	LIBESMTP
 OPTIONS_SUB=
 LIBESMTP_DESC=	Install libesmtp for SMTP support
 LIBCURL_DESC=	Install libcurl for Clickatell SMS support
-LIBLUA_DESC=	Install lilua for scripting
+LIBLUA_DESC=	Install liblua for scripting
 MYSQL_DESC=	Install libmysql for logging & persist
 
 LIBESMTP_CONFIGURE_ENABLE=	smtp
@@ -33,7 +35,7 @@ LIBESMTP_LIB_DEPENDS=	libesmtp.so:${PORTSDIR}/mail/libesmtp
 LIBCURL_CONFIGURE_WITH=	libcurl
 LIBCURL_LIB_DEPENDS=	libcurl.so:${PORTSDIR}/ftp/curl
 LIBLUA_CONFIGURE_WITH=	lua
-LIBLUA_USE=	LUA=yes
+LIBLUA_USES=	lua
 LIBLUA_CFLAGS=	-I${LUA_INCDIR}
 LIBLUA_LDFLAGS=	-L${LUA_LIBDIR}
 MYSQL_CONFIGURE_ON=	--with-mysql=${LOCALBASE}/bin/mysql_config

net/linknx/files/patch-src__ioport.cpp

@@ -0,0 +1,10 @@
+--- ./src/ioport.cpp.orig	2011-03-08 22:20:17.000000000 +0100
++++ ./src/ioport.cpp	2014-04-22 19:17:42.208791119 +0200
+@@ -21,6 +21,7 @@
+ #include <iomanip>
+ #include "ioport.h"
+ #include <fcntl.h>
++#include <unistd.h>
+ 
+ Logger& IOPort::logger_m(Logger::getInstance("IOPort"));
+ Logger& RxThread::logger_m(Logger::getInstance("RxThread"));