217712  Fix a couple of incorrect variable names in the sysctl code.
217713  - Panic on the 82598 adapter due to reading FCOE registers that don't exit
        - Make phy detection dynamic so adapters that support multiple types of
          media can be properly identified by the interface layer
        - Performance patch to the flow director (ixgbe_atr) code
        - Fix intermittent data corruption on the 82599
        - Add missing support code for buffer size and descriptors when doing
          jumbo frames, also add 16K cluster support.
        - Release RX lock when calling stack, this removes LOR problems.
217795  Remove TX_UNLOCK from the error path in local_timer, there is no LOCK
217796  Add missing case for Direct Attach 82598 in the dynamic phy detection
217797  Performance: don't run flow control shared code if nothing has changed

Approved by:  re (bz)

VLANs and HW_TAGGING in IPv6 the tag is not yet
in the frame, and thus an ICMP6 packet fails this
condition and does not get sent.

Approved by: re

Fix typos.

PR:	bin/148894
Submitted by:	olgeni

  Do not allocate multicast array memory in multicast filter
  configuration function. For failed memory allocations, em(4)/lem(4)
  called panic(9) which is not acceptable on production box.
  igb(4)/ixgb(4)/ix(4) allocated the required memory in stack which
  consumed 768 bytes of stack memory which looks too big.

  To address these issues, allocate multicast array memory in device
  attach time and make multicast configuration success under any
  conditions. This change also removes the excessive use of memory in
  stack.

  Reviewed by:	jfv

  Do not call voluntary panic(9) in case of if_alloc() failure.

  Reviewed by:	jfv

  -mostly stability fixes

MFC to RELENG 8.1 asap