3996 want a libzfs_core API to rollback to latest snapshot
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>

*** 17,27 ****
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! # Copyright (c) 2012 by Delphix. All rights reserved.
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--- 17,27 ----
  # information: Portions Copyright [yyyy] [name of copyright owner]
  #
  # CDDL HEADER END
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  # Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
! # Copyright (c) 2013 by Delphix. All rights reserved.
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  # WARNING:  STOP NOW.  DO NOT MODIFY THIS FILE.
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*** 47,56 ****
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          lzc_exists;
          lzc_get_holds;
          lzc_hold;
          lzc_receive;
          lzc_release;
+         lzc_rollback;
          lzc_send;
          lzc_send_space;
          lzc_snaprange_space;
          lzc_snapshot;