Allow staging as a regular user

lang/munger/Makefile

@@ -11,6 +11,10 @@ COMMENT=	Static lisp interpreter with text processing abilities
 
 LIB_DEPENDS=	libtre.so:${PORTSDIR}/textproc/libtre
 
+MAKE_ENV=	INSTALL_PROGRAM="${INSTALL_PROGRAM}" INSTALL_SCRIPT="${INSTALL_SCRIPT}" \
+		INSTALL_DATA="${INSTALL_DATA}" INSTALL_MAN="${INSTALL_MAN}" \
+		MKDIR="${MKDIR}"
+
 DATADIR=	${PREFIX}/share/${PORTNAME}-${PORTVERSION}
 
 OPTIONS_DEFINE=	SQLITE