Change PKGDIR from pkg/ to . Also fix places where ${PKGDIR} is

spelled out (many of which are ${PKGDIR}/MESSAGE -> ${PKGMESSAGE} type
fixes that shouldn't have been necessary) and the string "/pkg/"
appear.

java/java-tutorial/Makefile

@@ -26,7 +26,7 @@ do-install:
 	(cd ${WRKSRC} && ${TAR} -cf - * ) \
 	    | (cd ${PREFIX}/jdk${PORTVERSION}/docs/books/tutorial \
 	        && ${TAR} -xf -)
-	@${SED} s+!!PREFIX!!+${PREFIX}+g < ${PKGDIR}/MESSAGE > ${PKGMESSAGE}
+	@${SED} s+!!PREFIX!!+${PREFIX}+g < ${PKGDIR}/pkg-message > ${PKGMESSAGE}
 	@${CAT} ${PKGMESSAGE}
 	@${RM} ${PKGMESSAGE}