added more unit tests to demonstrate the use of logical and and or in expressions
added more unit tests to demonstrate the use of logical and and or in expressions


git-svn-id: de0229a90a04588cc4459530912ec55932f3d65c@136523 13f79535-47bb-0310-9956-ffa450edef68

apache/commons-jexl,apache/commons-jexl,apache/commons-jexl