[illumos-gate merge] (update manifest)
port of illumos-3644

    3644 Add virtio-net support into the Illumos
    Reviewed by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
    Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
    Reviewed by: David Hoppner <0xffea@gmail.com>

Conflicts:
	usr/src/uts/intel/Makefile.intel.shared
OS-76 vioif kernel heap corruption, NULL pointer dereference and mtu problem
ship vioif
ship stage2_eltorito