switch to mostly configuration in setup-env for check-kdc

tests/db/Makefile.am

@@ -11,6 +11,7 @@ check_SCRIPTS = loaddump-db add-modify-delete check-dbinfo check-aliases
 TESTS = $(check_SCRIPTS) 
 
 do_subst = sed -e 's,[@]srcdir[@],$(srcdir),g' \
+	-e 's,[@]top_builddir[@],$(top_builddir),g' \
 	-e 's,[@]objdir[@],$(top_builddir)/tests/db,g' \
 	-e 's,[@]EGREP[@],$(EGREP),g' 
 

tests/db/have-db.in

@@ -34,10 +34,9 @@
 # $Id$
 #
 
-srcdir="@srcdir@"
-base=`dirname "$0"`
+top_builddir="@top_builddir@"
 
-kdc="${base}/../../kdc/kdc"
+. ${top_builddir}/tests/bin/setup-env
 
 list=`${kdc} --builtin-hdb | sed 's/^builtin hdb backends: //'`
 oldIFS="$IFS"