#67 Dynamic loading of database driver broken

[Peter Becker]

The automatic loading of database drivers is currently broken. First of all the directory in the code is configured as "dbdriver", while the directory in the download is "dbDriver", which breaks on file systems that are case sensitive (roughly all but Windows). But even when the directory names match the loading fails -- the class loader can't find classes that are there (tried with two versions of the PostgreSQL driver).