Try to support mysql servers with version < 4.1 (related to #304)
Using CLIENT_PROTOCOL_41 flag to detect pre 4.1 servers

I'm not sure it's everything done but it works now..
Fixes a few bugs, changes fakeServer to behave like a PROTOCOL_41 compatible
Remove semver dependency

Not needed anymore
Change test FakeServer to behave as supporting protocol 4.1
Merge pull request #339 from felixge/fix304

Try to support mysql servers with version < 4.1 (related to #304)