[t:4382] add dirs to makefile clean rule

git-svn-id: file:///svn/toku/tokudb@38708 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/Makefile

@@ -1076,3 +1076,4 @@ clean:
 	rm -f dump.bdb.1426 dump.tdb.1426 test1426.bdb
 	rm -f *.bdb *.tdb
 	rm -f *.fastlog
+	rm -rf rundir.* recover-test_stress*.dir