use _CKSUMFILES in clean=dist, and recurse if we notice there are

SUPDISTFILES, so we get them as well.

This misbehavior noticed by Mikolaj Kucharski.

(the intention is obviously to regrab everything to verify whether
anything changed, and that includes SUPDISTFILES)

infrastructure/mk/bsd.port.mk

@@ -1,6 +1,6 @@
 #-*- mode: Makefile; tab-width: 4; -*-
 # ex:ts=4 sw=4 filetype=make:
-#	$OpenBSD: bsd.port.mk,v 1.880 2007/02/11 11:44:17 espie Exp $
+#	$OpenBSD: bsd.port.mk,v 1.881 2007/02/16 19:08:54 espie Exp $
 #	$FreeBSD: bsd.port.mk,v 1.264 1996/12/25 02:27:44 imp Exp $
 #	$NetBSD: bsd.port.mk,v 1.62 1998/04/09 12:47:02 hubertf Exp $
 #
@@ -2277,12 +2277,16 @@ _internal-clean:
 .  endif
 .endif
 .if ${_clean:L:Mdist}
+.  if defined(SUPDISTFILES) && !empty(SUPDISTFILES) && !defined(__FETCH_ALL)
+	@exec ${MAKE} clean=dist __FETCH_ALL=Yes ECHO_MSG=:
+.  else
 	@${ECHO_MSG} "===>  Dist cleaning for ${FULLPKGNAME${SUBPACKAGE}}"
-	@if cd ${FULLDISTDIR} 2>/dev/null; then \
-		rm -f ${_DISTFILES} ${_PATCHFILES}; \
+	@if cd ${DISTDIR} 2>/dev/null; then \
+		rm -f ${_CKSUMFILES}; \
 	fi
-.  if !empty(DIST_SUBDIR)
+.    if !empty(DIST_SUBDIR)
 	-@rmdir ${FULLDISTDIR}
+.    endif
 .  endif
 .endif
 .if ${_clean:L:Minstall}