[html-formfu] [patch] Change eval tests to use ref for big speed up in _Group.pm

[Steve Nolte]

Hmmm, would the tests be more reliable using UNIVERSAL::isa($item, 'HASH') instead of ref()?

I'm now wondering after reading this post:
http://www.perlmonks.org/?node_id=32148

Thoughts?  Is this necessary?

-Steve