Fixing tests accordingly.
ctype-ucs2.c:
  The same fix for UCS2.
ctype-utf8.c:
  Bug #9557
  MyISAM utf8 table crash
  The problem was that my_strnncollsp_xxx could
  return big value in the range 0..0xffff.
  for some constant pairs it could return 32738,
  which is defined as MI_FOUND_WRONG_KEY in
  myisamdef.h. As a result, table considered to
  be crashed. 
  Fix to return -1,0 or 1.


strings/ctype-utf8.c:
  Bug #9557
  MyISAM utf8 table crash
  The problem was that my_strnncollsp_xxx could
  return big value in the range 0..0xffff.
  for some constant pairs it could return 32738,
  which is defined as MI_FOUND_WRONG_KEY in
  myisamdef.h. As a result, table considered to
  be crashed. 
  Fix to return -1,0 or 1.
strings/ctype-ucs2.c:
  The same fix for UCS2.
mysql-test/t/ctype_utf8.test:
  Fixing tests accordingly.
mysql-test/r/ctype_utf8.result:
  Fixing tests accordingly.
mysql-test/t/ctype_ucs.test:
  Fixing tests accordingly.
mysql-test/r/ctype_ucs.result:
  Fixing tests accordingly.