[O] org-sort for non-En entries

[Gour]

Hello,

after resolving some issues with broken *.vcf files I was able to import my
contacts into org-mode via org-vcard and then wanted to sort entries which
contain Croatian characters.

However, org-sort does sort according to the English rules and the entries
containing Croatian chars are put at the end, after 'Z' entries.

What I need to do in order to get the contacts list sorted according to
Croatian alphabet: A,B,C,Č,Ć,D,Dž,Đ,..S,Š,..Z,Ž ?


Sincerely,
Gour

-- 
The senses are so strong and impetuous, O Arjuna, 
that they forcibly carry away the mind even of a man 
of discrimination who is endeavoring to control them.