MFC of the Intel Base driver for the Intel XL710 Ethernet Controller Family
	- It was decided to change the driver name to if_ixl for FreeBSD
	- This release adds the VF Driver to the tree, it can be built into
	  the kernel or as the if_ixlv module
	- The VF driver is independent for the first time, this will be
	  desireable when full SRIOV capability is added to the OS.

Submitted by:	jack.vogel@intel.com and eric.joyner@intel.com
Document r270157, FFS multithreaded soft updates.

Sponsored by:	The FreeBSD Foundation
Document r270159, various bhyve(4) enhancements.

Sponsored by:	The FreeBSD Foundation
Document r270297, native netmap(4) support in cxgbe(4) for
the T5 10G/40G card.

Sponsored by:	The FreeBSD Foundation
Document r270401, pam(3) 'account' facility support.

Sponsored by:	The FreeBSD Foundation
Document r270415, lukemftpd removal.

Sponsored by:	The FreeBSD Foundation
Document r270509, vtnet(4) netmap(4) support.

Sponsored by:	The FreeBSD Foundation
Document r270514, ASUS USB-AC51 support in urtwn(4).

Sponsored by:	The FreeBSD Foundation
Document r270552, kern.geom.part.mbr.enforce_chs tunable.

Sponsored by:	The FreeBSD Foundation
Document r270630, vm 'fast path' page fault hander.

Sponsored by:	The FreeBSD Foundation