[Maypole] Maypole model inheritance

[Dave Howorth]

OK, so here's what I now see with regard to this order of inheritance 
question:
First, in the loader, it's not pushing as I stated, it's a simple 
assignment:

         @{"$class\::ISA"} = qw(Class::DBI::mysql);

Then later in Maypole::setup it does this:

         unshift @{ $subclass . "::ISA" }, $config->model;

and subclass inherits from Maypole::Model::CDBI which inherits from 
Class::DBI

So that's why Class::DBI::mysql ends up behind Class::DBI in the 
inheritance and in consequence the wrong version of column_type gets called.

But using unshift is pretty unusual, so there's probably a good reason 
for it :)  Before I waste more time digging into it, do any of the gurus 
have any thoughts on this?

Cheers, Dave