[Suppress-Script] Initial list of 300 languages

[Jon Hanna]

McDonald, Ira wrote:
> I personally have seen code at Sharp and Xerox that specifically
> checks for language and optional country subtags and treats any
> other language-tag as a syntax error.

Such a test rejects valid RFC1766 and RFC3066 tags. Either this is a bug 
that rejects many tags currently in use, or it is based on RFC1766 but 
not actually RFC1766.