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3654 zdb should print number of ganged blocks 3656 remove unused function zap_cursor_move_to_key() Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Christopher Siden <christopher.siden@delphix.com> Reviewed by: Dan McDonald <danmcd@nexenta.com> Approved by: Garrett D'Amore <garrett@damore.org> References: https://www.illumos.org/issues/3654 https://www.illumos.org/issues/3656 https://github.com/illumos/illumos-gate/commit/d5ee8a1 Porting Notes: 3655 and 3657 were part of this commit but those hunks were dropped since they apply to mdb. Ported by: Brian Behlendorf <behlendorf1@llnl.gov>