DBD Firebird Perl driver passes all tests and compiles with no warrnings

иконографияThanks to Damyan and Stefan work we have a perl driver that is free of compilation warnings and that passes all tests when you run it with make test from command line.
Here is the commit log with recent changes.

Great work, is nice to see:

All tests successful. Files=33, Tests=842, 52 wallclock secs ( 0.98 usr 0.15 sys + 9.99 cusr 1.37 csys = 12.49 CPU)
Result: PASS

And here is the proof you need to clone the git repository and run in the shell

ISC_PASSWORD=masterkey make test