fix for the completely empty DESTDIR
--- ca-certificates-20090814.orig/Makefile	2009-07-08 23:18:57.000000000 +0200
+++ ca-certificates-20090814/Makefile	2009-08-22 20:36:42.614405912 +0200
@@ -17,7 +17,7 @@ clean:
 
 install:
 	for dir in $(SUBDIRS); do \
-	  mkdir $(DESTDIR)/$(CERTSDIR)/$$dir; \
+	  mkdir -p $(DESTDIR)/$(CERTSDIR)/$$dir; \
 	  $(MAKE) -C $$dir install CERTSDIR=$(DESTDIR)/$(CERTSDIR)/$$dir; \
 	done
 	for dir in sbin; do \