Add 'soft_credit_id' to contribute getfields function

Index: api/v3/Contribution.php
===================================================================
— api/v3/Contribution.php (revision 35677)
+++ api/v3/Contribution.php (working copy)
@@ -181,7 +181,12 @@

}
/*

• * Return valid fields for API
  + * Return valid fields for API. In general these are the fields accepted by the 'Create' operation
  + * The format of these fields is as per the $dao->fields function which is called by _civicrm_api_get_fields
  + * The getfields function is used by the API explorer and by field validation functions
  + *
  + * @param array $params array of parameters
  + * @return array values accepted by api
  */
  function civicrm_api3_contribution_getfields( $params ) {
  $fields = _civicrm_api_get_fields('contribution') ;
  @@ -189,6 +194,11 @@
  'title' => 'note',
  'type' => 2,
  'description' => 'Associated Note in the notes table');
  + $fields['soft_credit_id'] = array('name' => 'soft_credit_id',
  + 'title' => 'Soft Credit ID',
  + 'type' => 1,
  + 'description' => 'ID of Contact to be Soft credited to',
  + 'FKClassName' => 'CRM_Contact_DAO_Contact');

return civicrm_api3_create_success($fields );