MFC r261075: Update EINVAL description.
MFC r261084:
  malloc() with M_WAITOK doesn't return NULL.

MFC r261085:
  Fix typo in r261084.
  Add to the gctl_error() an ability to specify error description even
  if numeric error code is already specified. Also by default set
  error code to EINVAL.

  PR:		185852

MFC r261086:
  In gctl_copyin() remove unused error variable.
  geom_alloc_copyin() can't return ENOMEM, so describe its fail as bad
  control request. Add check for NULL pointer in gctl_dump(), since it
  can be NULL when geom_alloc_copyin() failed.

MFC r261089:
  Remove another unneeded NULL check from geom_alloc_copyin().
  Do copyout in case of gctl version mismatch and fix sbuf leak in
  g_ctl_ioctl_ctl().

MFC r261091:
  Always free sbuf in gctl_free().
MFC 261216:
Explicitly enable I/O and memory decoding in the bridge's command register
when activating an I/O or memory window on the CardBus bridge.
MFC	r261175:

binutils: add support for Intel SMAP-related instructions

Add support for stac/clac instructions to manipulate the flag
that controls the behaviour of Intel's Supervisor Mode Access
Prevention (SMAP) feature.

Tested by:	dim
Obtained from:	OpenBSD
MFC	r260988, r261034, r261120,  r261235:

ext2fs: Properly the EXT4_EXTENTS and EXT4_INDEX to the inode flags.

In order to support Ext4 extents we need to pass the Ext4 inode flags
without interfering with the chflags. This is better done by using the
i_flag field in the inode and doing proper translation to the linux
ext4 equivalents.

Solve a potential corruption issue in the dirindex code. The dirindex
code can now be renabled as the problems related to it have been
solved.

Suggested by:	bde
Tested by:	kevlo
MFC	r261136:

ext2fs: Re-enable reallocblk.

The major corruption issues affecting this code have been fixed.

Tested by:	Mike Ma
[automated] Merge in upstream-github/stable/9