BYTEMAN-238. Make invalid field reference error tell you the class name.
avoided NPE type-checking anonymous type -- fixes BYTEMAN-235

n.b. this does not make it possible to use anonymous types in compiled
rules, it just avoids the NPE. the latter still needs fixing.
Merge pull request #18 from doctau/BYTEMAN-238

BYTEMAN-238. Make invalid field reference error tell you the class name.
Merge pull request #19 from zhfeng/BYTEMAN-190

BYTEMAN-190 Support automation of offline parsing and typechecking