#95 Fix for synchronization error

[Anonymous]

Hello again!!

I'm the guy who submitted the 'synchronization error'
message yesterday. Today, I strike back to offer a fix
to that problem.

Here is a new version of 'jdbcConnection' class that
fixes the problem of multithreading access. You only
have to change the old 'jdbcConnection' class by the
new version included in the attached file.

I hope this will be useful!

Greetings

[Nobody/Anonymous]

New version of 'jdbcConnection' class