#494176 by catch: Less restrictive hook_file_download(), check access on all nodes containing a file before denying access.

#369560 and #380200: New APIs for retreiving a list of files within a node, and the inverse of retreiving a list of nodes that reference a file.

#366434 and #430196: FileField specific Views support, adding the "list" filter and the "data" field.

#417774: Add Public FileField API Functions and fix field_file_references() to not be field specific.

#367267: Reverting line needed for multigroup support, since it breaks groups until the multigroup patch is applied.