I see your point regarding security. I'll go with the server and add a little encryption between the client and server. But still, how does one get hands on the MySql source? I followed the links, tried with Bazaar, no success!
The mysql source can be found here:
Select "Source code" as your platform to get the source code (Same thing goes for all the connector libraries etc, just select source code as your platform if you don't want a binary package)