(mime-entity-children): Moved from mime-def.el; use

(mime-entity-children): Moved from mime-def.el; use
`mime-entity-children-internal'.
(mime-entity-node-id): Moved from mime-def.el; use
`mime-entity-node-id-internal'.
(mime-entity-number): Moved from mime-def.el; use
`mime-entity-node-id-internal'.
(mime-entity-buffer): Moved from mime-def.el; use
`mime-entity-buffer-internal'.
(mime-entity-point-min): Moved from mime-def.el; use
`mime-entity-header-start-internal'.
(mime-entity-point-max): Moved from mime-def.el; use
`mime-entity-body-end-internal'.
(mime-entity-header-start): Moved from mime-def.el; use
`mime-entity-header-start-internal'.
(mime-entity-header-end): Moved from mime-def.el; use
`mime-entity-header-end-internal'.
(mime-entity-content-type): Moved from mime-def.el; use
`mime-entity-content-type-internal'.
(mime-entity-content-disposition): Moved from mime-def.el; use
`mime-entity-content-disposition-internal'.
(mime-entity-encoding): Moved from mime-def.el; use
`mime-entity-encoding-internal'.
(mime-fetch-field): Use `mime-entity-original-header-internal' and
`mime-entity-set-original-header-internal'.
(mime-read-field): Use `mime-entity-parsed-header-internal' and
`mime-entity-set-parsed-header-internal'.
(eword-visible-field-p): Moved from eword-decode.el.
(mime-insert-decoded-header): Moved from eword-decode.el.
(mime-entity-body-start): Moved from mime-def.el; use
`mime-entity-body-start-internal'.
(mime-entity-body-end): Moved from mime-def.el; use
`mime-entity-body-end-internal'.
(mime-entity-media-type): Moved from mime-def.el.
(mime-entity-media-subtype): Moved from mime-def.el.
(mime-entity-parameters): Moved from mime-def.el.
(mime-entity-type/subtype): Moved from mime-def.el.