When InnoDB compares varchar field in ucs2 with given key using bin collation,
it calls my_strnncollsp_ucs2_bin() to perform comparison.
Because field length was lesser than length of key field should be padded
with trailing spaces in order to get correct result. 
Because  my_strnncollsp_ucs2_bin() was calling my_strnncollp_ucs2_bin(), which
doesn't pads field, wrong comparison result was returned. This results in
wrong result set.

my_strnncollsp_ucs2_bin() now compares fields like my_strnncollsp_ucs2 do,
but using binary collation.


mysql-test/t/ctype_ucs.test:
  Test case for bug#14583  Wrong my_strnncollsp_ucs2_bin() behaviour results in skipping
  correct records.
mysql-test/r/ctype_ucs.result:
  Test case for bug#14583  Wrong my_strnncollsp_ucs2_bin() behaviour results in skipping correct records.
strings/ctype-ucs2.c:
  Fix bug#14583 Wrong my_strnncollsp_ucs2_bin() behaviour results in skipping
  correct records.my_strnncollsp_ucs2_bin() now compares fields like my_strnncollsp_ucs2 do,
  but using binary collation.