acade - LANGUAGE SUBTAG REGISTRATION FORM

[Michael Everson]

I'll approve one or more subtags in the format YYYYacad provided that  
a specific dictionary/grammar reference to the orthography is given  
for each. I won't approve the 2008/2010 one because it is not official  
and unpublished.

This seems safest and non-controversial, since a particular source  
reference will be cited. This is just what we did for the French subtag.