Add some profiling code to track when potentially unnecessary virtual
calls are made in the thrift C++ serialization and deserialization code.
This can be used to help service implementors determine which places in
their code should be updated to use an appropriate thrift template
class.
git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@1005140 13f79535-47bb-0310-9956-ffa450edef68
