Fix off by one in lagg_port_destroy().

Reported by:	"Max N. Boyarov" <zotrix bsd.by>
Fix couple issues with ROD tokens content.

MFC after:	3 days
Split you the syscall handling to a separate file.
Fix the TARGET_ABI value clang uses. It shpuld be gnueabi on all ARM
soft-float architectures, and gnueabihf for hard-float.
Use rn_detachhead() instead of direct free(9) for radix tables.

Sponsored by:	Nginx, Inc.
zfsvfs_create(): Refuse to mount datasets whose names are too long.

This is checked for in the zfs_snapshot_004_neg STF/ATF test (currently
still in projects/zfsd rather than head).

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c:
- zfsvfs_create(): Check whether the objset name fits into
  statfs.f_mntfromname, and return ENAMETOOLONG if not.  Although
  the filesystem can be unmounted via the umount(8) command, any
  interface that relies on iterating on statfs (e.g. libzfs) will
  fail to find the filesystem by its objset name, and thus assume
  it's not mounted.  This causes "zfs unmount", "zfs destroy",
  etc. to fail on these filesystems, whether or not -f is passed.

MFC after:	1 month
Sponsored by:	Spectra Logic
MFSpectraBSD:	974872 on 2013/08/09
Add sysctl to track the resource consumption of ACPI interrupts.

Submitted by:	gibbs
MFC after:	1 month
Sponsored by:	Spectra Logic
MFSpectraBSD:	636827 on 2012/09/28
Remove lock init from radix.c.
Radix has never managed its locking itself.
The only consumer using radix with embeded rwlock
is system routing table. Move per-AF lock inits there.
Ensure that every ENTRY(foo) has a matching END(foo).
It allows to build with newer binutils

Differential Revision:	https://reviews.freebsd.org/D877
Reviewed by:	jhibbits
Always resolve PORTSDIR to absolute paths using realpath(1).

Reported by:	madpilot
Reviewed by:	bapt
X-MFC-With:	272282
In the syncer, drop the sync mutex while patting the watchdog.

Some watchdog drivers (like ipmi) need to sleep while patting the watchdog.
See sys/dev/ipmi/ipmi.c:ipmi_wd_event(), which calls malloc(M_WAITOK).

Submitted by:	asomers
MFC after:	1 month
Sponsored by:	Spectra Logic
MFSpectraBSD:	637548 on 2012/10/04
Instead of requiring an edit to turn on ZFS debugging, define ZFS_DEBUG.

MFC after:	1 month
Clean up detection of big-endian ARM. In all cases we follow the pattern
arm*eb*. Check we are building for arm and if MACHINE_ARCH follows this
pattern.