[XeTeX] add \hyphenateminwordsize

[Philip Taylor]

John Was wrote:

> I might be misunderstanding, but would \lefthyphenmin = 2 and
> \righthyphenmin = 3 not solve this?  I have \righthyphenmin set to 3 for
> all the language hyphenation patterns that I need to invoke, but there's
> no need for the left and right settings to be identical.

Would not hyphenation <foreign language="Spanish">comida</> correctly,
John :  "co-mi-da" are the valid hyphenation points.

** Phil.