Forms now have their own local bindings table so that anything
declared within a form is local to that form. This means you can
have fields of the same name in different forms.
Added inlined attribute setting for strings e.g. "This is \bold bold"
Added entry and exit functions for fields.
than at compile time.
Should have same functionality as old libforms but with new mechanism.
Lots of new features that use the new mechanism are still to be added.
