SilcBool silc_utf8_strcasecmp(const char *s1, const char *s2,
                                  SilcUInt32 n);

    The silc_utf8_strcasecmp() function compares the two strings s1 and s2,
    ignoring the case of the characters.  It returns TRUE if the strings
    match and FALSE if they differ.

    This functions expects NULL terminated UTF-8 strings.  The strings
    will be casefolded and normalized before comparing.  Certain special
    Unicode characters will be ignored when comparing.