bin/dd: revert 273734, as it fails on 32bit platforms

Revert: insufficient testing on 32bit platforms

PR:		191263
Add foo_genassym.c files to DPSRCS so dependencies for them are generated.
This ensures these objects are rebuilt to generate an updated header of
assembly constants if needed.
De-k&r-ify function definitions in kern/kern_resource.c

No functional changes.
Tidy up functions related to uidinfo management.

- reference found uidinfo in uilookup
- reduce nesting by handling shorter cases first
Remove an extra copy of hv_kvp_daemon(8) [1].

While I'm there also correct typos in OptionalObsoleteFiles and add
information of the command line options for hv_kvp_daemon(8).

Reported by:	jmg [1]
Reviewed by:	jmg
MFC after:	2 weeks
Output a summary of optional SVM features in dmesg similar to CPU features.
If bootverbose is enabled, a detailed list is provided; otherwise, a
single-line summary is displayed.

Differential Revision:	https://reviews.freebsd.org/D1008
Reviewed by:	jhb, neel
MFC after:	1 week
Remove bhyve SVM feature printf's now that they are available in the
general CPU feature detection code.

Reviewed by:	neel
Some cxgbe/iw_cxgbe fixes:
- Free rt in c4iw_connect only if it is allocated.
- Call soclose instead of so_shutdown if there is an abort from the peer.
- Close socket and return failure if TOE is not enabled.

Submitted by:	Hariprasad at Chelsio dot com
Sponsored by:	Chelsio Communications
Merge remote-tracking branch 'freebsd/master' into hardened/current/master