ZoL: merge in large dnode feature fixes
illumos is missing a few small follow up ZoL bug fixes for the large dnode feature. We should pull those in.
Those commits are in the ZoL tree as (newest to oldest):
PR 8435 - 75d6b7ddca269542279975f716a343bb40a79baf - Add missing copyright notice to large_dnode tests
PR 7433 - e14a32b1c844d924b9f093375c0badcf10f61741 - Fix object reclaim when using large dnodes
PR 6616 - 48fbb9ddbf2281911560dfbc2821aa8b74127315 - Free objects when receiving full stream as clone
PR 6695 - 39f56627ae988d09b4e3803c01c22b2026b2310e - receive_freeobjects() skips freeing some object