- Convert USE_BZIP2 to USES

- Simplify docs installation

games/glsfcave/Makefile

@@ -11,7 +11,7 @@ MASTER_SITES=	http://user.ecc.u-tokyo.ac.jp/~g650192/glsfcave/ \
 MAINTAINER=	amdmi3@FreeBSD.org
 COMMENT=	Control a ribbon to avoid hitting walls
 
-USE_BZIP2=	yes
+USES=		tar:bzip2
 USE_GL=		glut
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
@@ -21,17 +21,13 @@ PORTDOCS=	*
 
 OPTIONS_DEFINE=	DOCS
 
-.include <bsd.port.options.mk>
-
 do-build:
 	cd ${WRKSRC} && ${CC} -o glsfcave main.c -I${LOCALBASE}/include \
 		-L${LOCALBASE}/lib -lglut -lGL -lGLU
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/glsfcave ${STAGEDIR}${PREFIX}/bin
-.if ${PORT_OPTIONS:MDOCS}
 	${MKDIR} ${STAGEDIR}${DOCSDIR}
-	${INSTALL_DATA} ${WRKSRC}/README ${STAGEDIR}${DOCSDIR}
-.endif
+	${INSTALL_DATA} ${WRKSRC}/README ${STAGEDIR}${DOCSDIR}/
 
 .include <bsd.port.mk>