CRM-6067 Custom date fields don't display formatting options in Views interface

Custom date fields from CiviCRM loaded through Views 2 don't show date format options in the Views interface.
Preliminary fix: change line 4770 of civicrm/drupal/modules/views/civicrm.views.inc from

$customHTMLTypes = array( 'Select', 'Multi-Select', 'AdvMulti-Select', 'Radio', 'CheckBox', 'Select Date', 'Select State/Province', 'Select Country', 'Multi-Select Country',

to

$customHTMLTypes = array( 'Select', 'Multi-Select', 'AdvMulti-Select', 'Radio', 'CheckBox', 'Select State/Province', 'Select Country', 'Multi-Select Country',

Reasoning: Date select ('Select Date') 'elements should not be handed off to the civicrm_handler_field_custom function, but should rather be allowed through the civicrm_get_field_handler function which will then determine their proper type (date) and the appropriate handler.