What steps will reproduce the problem?
1. Create a binary stream in a 32 bit architecture machine using some types 
that depend on it (e.g. size_t.)
2. Send that stream to a 64 bit machine and attempt to read it.
3. Exceptions will be raised because of unsufficient stream size. Actually, the 
whole stream can't be read due to the fact that the 64 bit architecture is 
expecting 64 bit size_t data, etc.

We need to have serialized objects be able to be read from machines with other 
architectures than the one that serialized the object.