math/octave-forge-queueing: Fix serious installing issues.

As it was, installing this port destroyed the packages structure for
octave.

Bump portrevision.

math/octave-forge-queueing/Makefile

 PORTNAME=	octave-forge-queueing
 DISTVERSION=	1.2.8
+PORTREVISION=	1
 CATEGORIES=	math
 
 MAINTAINER=	stephen@FreeBSD.org
 COMMENT=	Octave-forge package ${OCTAVE_PKGNAME}
 WWW=		https://packages.octave.org/
 
+BUILD_DEPENDS+=	fig2dev:print/fig2dev
+
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKDIR}/${OCTAVE_SRC}/COPYING
 
-USES=		octave
+USES=		octave tex
+USE_TEX=	base:build tex:build
 USE_GITHUB=	yes
 GH_ACCOUNT=	mmarzolla
 GH_PROJECT=	queueing
 
 OCTAVE_SRC=	${OCTAVE_PKGNAME}-${DISTVERSION}
 
-NO_ARCH=	yes
-NO_BUILD=	yes
+WRKSRC=		${WRKDIR}/${OCTAVE_SRC}
+ALL_TARGET=	ALL
 
 .include <bsd.port.mk>