Enable the use of VM_PHYSSEG_SPARSE on amd64 and i386, making it the default
on i386 PAE.  Previously, VM_PHYSSEG_SPARSE could not be used on amd64 and
i386 because vm_page_startup() would not create vm_page structures for the
kernel page table pages allocated during pmap_bootstrap() but those vm_page
structures are needed when the kernel attempts to promote the corresponding
kernel virtual addresses to superpage mappings.  To address this problem, a
new public function, vm_phys_add_seg(), is introduced and vm_phys_init() is
updated to reflect the creation of vm_phys_seg structures by calls to
vm_phys_add_seg().

Discussed with:	Svatopluk Kraus
MFC after:	3 weeks
Sponsored by:	EMC / Isilon Storage Division
MFV of 274557,tzdata{2014j}

Release 2014j - 2014-11-10 17:37:11 -0800

  Changes affecting current and future time stamps

    Turks & Caicos' switch from US eastern time to UTC-4 year-round
    did not occur on 2014-11-02 at 02:00.  It's currently scheduled
    for 2015-11-01 at 02:00.  (Thanks to Chris Walton.)

  Changes affecting past time stamps

    Many pre-1989 time stamps have been corrected for Asia/Seoul and
    Asia/Pyongyang, based on sources for the Korean-language Wikipedia
    entry for time in Korea.  (Thanks to Sanghyuk Jung.)  Also, no
    longer guess that Pyongyang mimicked Seoul time after World War II,
    as this is politically implausible.

    Some more zones have been turned into links, when they differed
    from existing zones only for older time stamps.  As usual,
    these changes affect UTC offsets in pre-1970 time stamps only.
    Their old contents have been moved to the 'backzone' file.
    The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
    Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
    Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
    Indian/Mayotte.

  Changes affecting commentary

    The commentary is less enthusiastic about Shanks as a source,
    and is more careful to distinguish UT from UTC.
prevent doing filter ops locking for staticly compiled filter ops...
This significantly reduces lock contention when adding/removing knotes
on busy multi-kq system...  Next step is to cache these references per
kq.. i.e. kq refs it once and keeps a local ref count so that the same
refs don't get accessed by many cpus...

only allocate a knote when we might use it...

Add a new flag, _FORCEONESHOT..  This allows a thread to force the
delivery of another event in a safe manner, say waking up an idle http
connection to force it to be reaped...

If we are _DISABLE'ing a knote, don't bother to call f_event on it, it's
disabled, so won't be delivered anyways..

Tested by:	adrian
Fix a couple of bugs around the handling of structs and unions of size zero.
These would cause ctfconvert(1) to return an error when attempting to
resolve valid C types.

Reviewed by:	Robert Mustacchi <rm@joyent.com>
MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division
Remove an incorrect optimization. The type IDs of each member of a struct or
union must be checked when determine whether two types are equivalent. This
bug could cause ctfmerge(1) to incorrectly merge distinct types.

Reviewed by:	Robert Mustacchi <rm@joyent.com>
MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division
Only compare visitation counters if they've both been set for the current
type graph walk.

Reviewed by:	Robert Mustacchi <rm@joyent.com>
MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division