THRIFT-212. python: Make TFramedTransport implement CReadableTransport This involved adding a few methods to provide lower-level access to the internal read buffer. This will allow us to use TBinaryProtocolAccelerated with TFramedTransport.
incubator/thrift/trunk/lib/py/src/transport/TTransport.py
incubator/thrift/trunk/test/py/SerializationTest.py