jesper: Jesper Krogh
+jgoulah: John Goulah <jgoulah@cpan.org>
+
jguenther: Justin Guenther <jguenther@cpan.org>
jnapiorkowski: John Napiorkowski <jjn1056@yahoo.com>
This is useful in the case of upgrading across multiple versions
to concatenate several files to create one upgrade file.
+You'll probably want the db_version retrieved via $self->get_db_version
+and the schema_version which is retrieved via $self->schema_version
+
=cut
sub create_upgrade_path {