- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

Sync the e1000 drivers with what's in head as of r294327, modulo parts
that don't apply to stable/10 (driver API, if_inc_counter(), RSS changes
etc.) and modulo r287465 (which reportedly breaks igb(4)), i. e. assorted
fixes and improvements only:

o MFC r267385 (partial):
- Don't compare bus_dma map pointers for static DMA allocations against
NULL to determine if bus_dmamap_unload() or bus_dmamem_free() should be
called. Instead, check the associated bus and virtual addresses.
- Don't clear static DMA maps to NULL.
o MFC r284933:
Delete the refernce to VLAN handling being disabled by default. This is
no longer the case. [1]
o MFC r285639:
Add an adapter CORE lock in the DDB hook em_dump_queue to avoid WITNESS
panic in em_init_locked() while debugging.
o MFC r285879:
- Remove unused txd_saved.
- Intialize txd_upper, txd_lower and txd_used at declaration.
o MFC r286162:
Free mbufs when busdma loading fails.
o MFC r286829:
Add capability to disable CRC stripping as it breaks IPMI/BMC capabilities
on certain adatpers. [2]
o MFC r286831: [3]
- Increase EM_MAX_SCATTER to 64 such that the size of em_xmit()::
segs[EM_MAX_SCATTER] doesn't get overrun by things like NFS that can
and do shove more than 32 segs when being used with em(4) and TSO4.
- Update tso handling code in em_xmit() with update from jhb@
- Set if_hw_tsomax, if_hw_tsomaxsegcount and if_hw_tsomaxsegsize to
appropriate values.
- Define a TSO workaround "magic" number of 4 that is used to avoid an
alignment issue in hardware.
- Change a couple of integer values that were used as booleans to actual
bool types.
- Ensure that em_enable_intr() enables the appropriate mask of interrupts
and not just a hardcoded define of values.
o MFC r286832:
e1000/if_lem.c bump to 1.1.0
o MFC r286833:
Bump all copywrite dates to 2015.
o MFC r287112:
Style/whitespace cleanup in shared/common code.
o MFC r293331:
- Switch em(4) to the extended RX descriptor format.
- Split rxbuffer and txbuffer apart to support the new RX descriptor
format structures. Move rxbuffer manipulation to em_setup_rxdesc() to
unify the new behavior changes.
- Add a RSSKEYLEN macro for help in generating the RSSKEY data structures
in the card.
- Change em_receive_checksum() to process the new rxdescriptor format
status bit.
o MFC r293332:
Disable the reuse of checksum offload context descriptors in the case
of multiple queues in em(4). Document errata in the code.
o MFC r293854:
Given that em(4), lem(4) and igb(4) hardware doesn't require the
alignment guarantees provided by m_defrag(9), use m_collapse(9)
instead for performance reasons.
While at it, sanitize the statistics softc members, i. e. retire
unused ones and add SYSCTL nodes missing for actually used ones.

PR: 118693 [1], 161277 [2], 195078 [3], 199174 [3], 200221 [3]

MFC of R267935: Sync the E1000 shared code to Intel internal, and
more importantly add new I218 adapter support to em.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update the Intel igb driver to version 2.4.0
- This version has support for the new Intel Avoton systems,
including 2.5Gb support, further it now has IPv6/TSO6 support as
well. Shared code has been updated where necessary as well. Thanks
to my new assistant Eric Joyner for doing the transmit path changes
to bring in the IPv6/TSO6 support. Thanks to Gleb for catching the
one bug and change needed in NETMAP.

Approved by: re

Refresh on the shared code for the E1000 drivers.
- bear with me, there are lots of white space changes, I would not
do them, but I am a mere consumer of this stuff and if these drivers
are to stay in shape they need to be taken.

em driver changes: support for the new i217/i218 interfaces

igb driver changes:
- TX mq start has a quick turnaround to the stack
- Link/media handling improvement
- When link status changes happen the current flow control state
will now be displayed.
- A few white space/style changes.

lem driver changes:
- the shared code uncovered a bogus write to the RLPML register
(which does not exist in this hardware) in the vlan code,this
is removed.

Sync with Intel internal source:
shared code update and small changes in core required
Add support for new i210/i211 devices
Improve queue calculation based on mac type

MFC after:5 days