Merge pull request #72 from quintonm/master

P6SpyDriver.connect() should return null if the driver can not handle th...
Merge pull request #73 from quintonm/master

Issue #66 - Spy log message are doubled when using a datasource which lo...
Issue #66 - Spy log message are doubled when using a datasource which loaded the driver from DriverManager
Issue #66 - Spy log message are doubled when using a datasource which loaded the driver from DriverManager
Issue #66 - Spy log message are doubled when using a datasource which loaded the driver from DriverManager
Issue #74 - Switch to CGLIB proxies

- add cglib to p6spy jar file