MFC r253417:
Clear the vnode knotes before destroying vpollinfo.

MFC r253737:
Split the destruction into the helper destroy_vpollinfo_free(), and
call it when raced, instead of destroy_vpollinfo().
MFC r253328:
Create a proper stack frame for i386 version of bcopy().
MFC r253525:
Use the same union name on the left and right sides of the conversion.
MFC r253526:
Fix several warnings.
Fix crash in aio_pty_cleanup() by initializing the pointer before
dereferencing.
MFC r253352:
MFi386: add ddb "show sysregs" command.
MFC r253076: rc.d/zfs: pass -v option to zfs mount
MFC r253067: zfsboottest: sync with changes in zfs boot code
MFC r253068: zfsboottest.sh: remove checks for things that are not
strictly required
MFC r253605: zfsboottest: remove explicit -Werror
MFC r253072: amd64: use -mno-omit-leaf-frame-pointer in addition to
-fno-omit-frame-pointer
MFC r253601: newvers.sh: fix the fallback case of git-svn detection
MFC r253602: newvers.sh: add another git-svn fallback
MFC r253070: zfs: load zpool.cache after a root fs is mounted
MFC r253073: zfs: try to properly handle i/o errors in mappedread_sf
Revert the MFC of the r244237, done as r244806.  There are indeed bugs
in XEN pmap.  The revert hides a panic with the cost of non-working
vfork(2), which means more obscure misbehaviour in the usermode.
Revert is only done on the stable branch to maintain the consistent
erratic behaviour.

PR:	kern/180788
Sync-up bsdinstall(8)/bsdconfig(8) list of mirrors.

SVN r253543:
Update mirror list to more closely match
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/mirrors-ftp.html

SVN r253545:
Sync-up with bsdinstall(8) FTP mirrorselect changes.

SVN r253566:
Remove ftp2.tr.freebsd.org, it is out of date.

Reviewed by:	gjb
MFC r245055 (by neel):
Add macros required to enable VMX operation on Intel processors.
MFC r250261: Update zlib to 1.2.8.
MFC r245347: Add color.4th.
MFC r253919: Fix the bootable CD.
MFC r253859:
Remove unused malloc type.