libc/rpc: Fix some prototypes.
mxge: Limit unrelated softc fields' visibility to RX and TX path
mxge: Simplify MSI handling; cleanup legacy interrupt handling
ifq: Add ifq_set_hw_serialize

This eases the drivers which use splitted serializers but only have one
transmit queue.
kernel: Add vm_phys_fictitious_unreg_range()

Rework vm_phys_fictitious_reg_range() a bit

Obtained-from: FreeBSD