MFV r342469: 9630 add lzc_rename and lzc_destroy to libzfs_core

illumos/illumos-gate@049ba636fa37a2892809192fc671bff9158a01cd
https://github.com/illumos/illumos-gate/commit/049ba636fa37a2892809192fc671bff9158a01cd

https://www.illumos.org/issues/9630

Rename and destroy are very useful operations that deserve to be in
libzfs_core.  And they are not hard to implement too.

MFC after: 2 weeks
Relnotes: maybe