MFC r260049:

Add mibs for hastd(1) queue stats.
MFC r258821 - fix tcp simultaneous close

PR:             kern/99188
Merged r260415 from head.

Approved by:	davidcd
Revert MFC of r258821 - it was already handled by MFC of r239672.

Pointy hat to: peter
MFC	r260361:

gcc: Fix optimization bug.

GCC-PR rtl-optimization/34628
	* combine.c (try_combine): Stop and undo after the first combination
	if an autoincrement side-effect on the first insn has effectively
	been lost.
MFC r260184:
Minor correction for the XHCI reset logic.