Disable udf test

BitKeeper/etc/ignore:
  Added mysql-test/r/udf.log to the ignore list
mysql-test/t/disabled.def:
  Disable the udf test, per bug #18564. Permission by Brian

.bzrignore

@@ -1277,3 +1277,4 @@ scripts/mysql_upgrade
 include/openssl
 mysql-test/r/bdb.log
 mysql-test/r/im_client_port.log
+mysql-test/r/udf.log

mysql-test/t/disabled.def

@@ -12,3 +12,4 @@
 
 sp-goto         : GOTO is currently is disabled - will be fixed in the future
 ndb_load        : Bug#17233
+udf             : Bug#18564 (Permission by Brian)