Language range 'lang-en-' should match 'lang-en'.

[Hallvard B Furuseth <h.b.furuseth@usit.uio.no>]

A search requesting 'cn;lang-en-' does not find 'cn;lang-en'.
It should, according to rfc3066 section 2.5:

   (...) a language-range has the same syntax as a language-tag, or
   is the single character "*".

   A language-range matches a language-tag if it exactly equals the tag,
   or if (...)

I'll commit a fix
  http://folk.uio.no/hbf/OpenLDAP/lang-range.txt
unless someone protests.

-- 
Hallvard