12217 add ld assert-deflib and guidance to gate build
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
Reviewed by: Gergő Mihály Doma <domag02@gmail.com>
Approved by: Dan McDonald <danmcd@joyent.com>

6275874 piclsbl make file needs some cleanup
6310408 piclsbl console messages when usb memory stick is taken out

OpenSolaris Launch