(Added cause exception to some parser exceptions, now that it's available.)
(Added cause exception to some parser exceptions, now that it's available.)

apache/incubator-freemarker,pradeepmurugesan/incubator-freemarker,apache/incubator-freemarker,awils18/incubator-freemarker,pradeepmurugesan/incubator-freemarker,woonsan/incubator-freemarker,awils18/incubator-freemarker,woonsan/incubator-freemarker