  This paper has been withdrawn by the author because he was informed of the
following paper:
  Cummins C. and King R. C., An algorithm for calculating characters of Hecke
algebras Hn (q) of tyoe An-1 when q is a root of unity, Comm. Algebra 21
(1993), no.12 4425-4437 by its first author. The author's main result seems to
be included in their result.
