MFC of r196477  Don't delete copies of nthread_create(9) we find inthe filesystem.  we now link it to kproc_create(9), it's new name.
MFC of r196477
 Don't delete copies of nthread_create(9) we find inthe filesystem.
 we now link it to kproc_create(9), it's new name.

Approved by:	re (kib)

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