Status parameter for section object list

*Title: New 'status' parameter for 'object_list' and 'object_list_count' fetch functions of 'section' module.

*Documentation:
Added new optional parameter 'status' to give possibility to fetch separately
archived (trashed) and published content-objects (or count of them) using 'object_list'
or 'object_list_count' fetch functions of 'section' module. Thus 'status' can be one of
following values: 'archived' or 'published'. Default is 'published'.
Examples:

This one will fetch all not more then 20 archived objects which belong to standard section (id=1):
{set $objects = fetch( 'section', 'object_list', hash( section_id, 1,
                                                       limit, 20,
                                                       offset, 3,
                                                       status, 'archived' ) )}

and one will fetch all objects published within media section (id=3):
{set $objects_count = fetch( 'section', 'object_list_count', hash( section_id, 3 ) )}