[i18n] imap_sort localization

[persian-horde@metanetworking.com]

Hello

As we've seen in the imp head code, the imp uses the imap_sort function to
sort messages, (by Subject, Sender, etc). Although this function has a
charset arguement, but it does not support localization for other locales
alphabets (such as fa_IR) and does not sort correctly.

but the usort function works well for sorting most of the non-english
locales as well as fa_IR:

setlocale(LC_ALL,"fa_IR");
usort($arraytobesorted, 'strcoll');

and this work well,

Our question is that is it acceptable(or possible) to feed the output of
imap_sort to usort for correct sorting?

Any other idea is highly appreciated,
Thanks for your help.

Persian Horde Team.