- Improved form handling. + Introduced two new functions: 1. form_set_error($name, $message): files an error against the form element with the specified $name. 2. form_has_errors(): returns true if errors has been filed against form elements. + Updated the form handling: 1. The form_ functions will add 'class="error"' when a form field has been found to be erroneous. 2. The error message is passed to theme_form_element() when the particular form field has been found to be erroneous. + I updated the user and profile module to take advantage of these new functions. + IMPORTANT: the _user() hook changed. The 'validate' case should no longer retun an error message when something goes wrong but should set it with form_set_error().
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