Rename elf*-powerpc into elf*-powerpc-freebsd in binutils

The powerpc support was the only supported architecture not prepending the elf format name
with "-freebsd" in base this change makes it consistent with other architectures.
On newer version of binutils the powerpc format is also prepended with "-freebsd".

Also modify the kernel ldscripts in that regards.

As a result it is now possible cross build the kernel on powerpc using newer binutils

Differential Revision:	https://reviews.freebsd.org/D926
Differential Revision:	https://reviews.freebsd.org/D928
Virtualize if_epair(4).  An if_xname check for both "a" and "b" interfaces
is added to return EEXIST when only "b" interface exists---this can happen
when epair<N>b is moved to a vnet jail and then "ifconfig epair<N> create"
is invoked there.
Only build/run hsearch_basic and hsearch_r_basic on NetBSD

hdestroy1 is not present on FreeBSD

Sponsored by: EMC / Isilon Storage Division
Expect SIGSEGV in lib/libc/stdlib/t_getenv:setenv_basic

See bin/189805 for more details

In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
Store persistent reservation keys as uint64_t instead of uint8_t[8].

This allows to simplify the code and save 512KB of RAM per LUN (8%)
by removing no longer needed "registered" keys flags.
Use FreeBSD-bit-checking-style
This appease gcc 4.9 issuing warnings about parentheses

Differential Revision:	https://reviews.freebsd.org/D933
Reviewed by:	marius
Fix typo revealed by using newer binutils

Differential Revision:	https://reviews.freebsd.org/D933
Reviewed by:	marius
o Add machine-dependent SMP part
o Enable SMP

Sponsored by:	DARPA, AFRL
Various fixes to stats:
- Read the counts of received, dropped, and transmitted management
  packets and add sysctl nodes for them.
- Fix the total octets received/transmitted to read all 64 bits of
  the counters.
- Add missing sysctl nodes for rlec, tncrs, fcruc, tor, and tot.
- Remove spurious spaces.

Reviewed by:	Eric Joyner @ Intel
MFC after:	1 week
Partially fix build on !amd64

Pointed by:	bz
Fix NOINET6 build for ipfw.
Fix KASSERT argument type.
Disable tests that don't pass on FreeBSD due to missing support in
humanize_number(3). Bringing in additional revisions from NetBSD's
humanize_number(3) will fix the tests

Account for the fact that util.h on NetBSD is libutil.h on FreeBSD

Submitted by: pho
Sponsored by: EMC / Isilon Storage Division
Add missing #include <sys/time.h> for gettimeofday

Sponsored by: EMC / Isilon Storage Division
FreeBSD returns ENOTTY instead of EBADF in ttyname_r; mark it as an expected
failure

PR: 191936

In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
Don't pass RF_ALLOCATED to bus_alloc_resource().
FreeBSD doesn't support strings greater than MAXHOSTNAMELEN-1 in
{get,set}{domain,host}name. Adjust the tests to not exceed that
value when testing out the code

Add a positive and negative test for MAXHOSTNAMELEN-1 and
MAXHOSTNAMELEN, respectively

PR: 181127
In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division
Change the PF hash from Jenkins to Murmur3.  In forwarding tests
this showed a conservative 3% incrase in PPS.

Differential Revision:	https://reviews.freebsd.org/D461
Submitted by:	des
Reviewed by:	emaste
MFC after:	1 month
Make MAP_NOSYNC handling in the vm_fault() read-locked object path
compatible with write-locked path.  Test for MAP_ENTRY_NOSYNC and set
VPO_NOSYNC for pages with dirty mask zero (this does not exclude a
possibility that the page is dirty, e.g. due to read fault on
writeable mapping and consequent write; the same issue exists in the
slow path).

Use helper vm_fault_dirty() to unify fast and slow path handling of
VPO_NOSYNC and setting the dirty mask.

Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
Disable the invalid pointer test on FreeBSD

FreeBSD segfaults on invalid pointers passed to getcwd because it throbs the
address passed in in libc, whereas NetBSD just passes the information off to
the syscall, which allows the kernel to return EFAULT on bad pointers.

In collaboration with: pho
Sponsored by: EMC / Isilon Storage Division