[illumos-Developer] webrev: removal of snmpd and SEA, 2nd try

[Garrett D'Amore]

Here's another try at removal of snmpdx.  

Webrev is at http://mexico.purplecow.org/gdamore/webrev/nosea

I'd appreciate a timely review.  This eliminates some 65KLOC from the
build, and should help in at least some small way with the compilation
times. :-)

	- Garrett