MFstable/10 r260402:

MFstable/10 r260402:

Bring back the old size of the kinfo_file structure to preserve ABI.
Keep only one uint64_t spare for further cap_rights_t expension.

Add a comment clarifying that if the size of this structure changes,
a new sysctl MIB has to be allocate for it and the old structure has
to be returned by the old sysctl MIB.

Requested by:	re
Approved by:	re (gjb)

git-svn-id: svn://svn.freebsd.org/base/releng/10.0@260406 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f