code. This will require fixes to any themes that rely on the node data
structure previously used.

Added a $node_field parameter to hook_field() and hook_widget(). This eases
a very common pattern of getting and setting this value. While $node is still
passed by reference, fields should *not* modify it. Instead, modify $node_field
which is saved back automatically.

This is ground work for implementing select/checkbox/radio widgets.

- Fix for multi-valued number fields

Max foe number fields was not being saved.

requires running update.php.

- Removed extra hook_field_settings() parameter
- Corrected textarea/textfield confusion