Changes from latest ISO 639-3 files

ISO 639-3/RA issued a new set of Code Set and Names Index tab files
dated 2012-06-14, after the big 2011 series of change requests and final
corrections, but before I started converting the 639-3 data into
registration requests for the Language Subtag Registry. The main purpose
of this update seems to have been to change the format of the files, but
there were some content changes as well, described below, which affect
the LSR requests.

I propose that we go ahead with the big wave of changes we are preparing
to submit to IANA this weekend, and submit the additional changes
shortly afterward, so as to not delay the big wave (which has already
been delayed long enough). Details on each proposed disposition are
below.

ckn - Kaang Chin

This code element is new in the June 14 file, and has a Web page on the
RA's site, but with a note: "Change request pending. View Change Request
2011-019." The change request to create this code element is not shown
as having been approved yet. I suggest NOT adding this subtag to the LSR
until the RA formally approves the code element, even though this causes
a temporary mismatch with the 639-3 tab files.

ekl - Kol (Bangladesh)

This new name for an existing code element (originally "Kol") was added
as the Reference Name in the June 14 file. Other languages named "Kol"
exist — 'biw' for "Kol (Cameroon)" and 'kol' for "Kol (Papua New
Guinea)" — but this was the only one called just "Kol." The Web page
shows "Kol" listed first, but the tab files (which are normative) show