Rev 2 of Thrift, the Pillar successor

Rev 2 of Thrift, the Pillar successor

Summary: End-to-end communications and serialization in C++ is working

Reviewed By: aditya

Test Plan: See the new top-level test/ folder. It vaguely resembles a unit test, though it could be more automated.

Revert Plan: Revertible

Notes: Still a LOT of optimization work to be done on the generated C++ code, which should be using dynamic memory in a number of places. Next major task is writing the PHP/Java/Python generators.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@664712 13f79535-47bb-0310-9956-ffa450edef68