Problem: some pieces of code relied on the default character
set settings, which didn't work in case of default character set
ucs2.
Fix: Specifying character set explicitly, not to depend on
the default settings.


mysql-test/suite/rpl_ndb/r/rpl_ndb_ctype_ucs2_def.result:
  Recording correct test result
mysql-test/suite/rpl_ndb/t/disabled.def:
  Enabling test
sql/ha_ndbcluster_binlog.cc:
  Character set of the NDB helper tables should
  not rely of the default settings, to avoid creating
  tables in different character sets on master and slave.
  Adding explicit character set. UTF8 should be fine.
  
  character_set_client should not rely on the default
  character set settings, which can be ucs2. Helper SQL queries
  sent by NDB are all in pure ASCII. Setting client_character_set
  to latin1.
sql/log_event.cc:
  Adding assert to make sure that binary log does not have 
  queries in character set which parser does not understand
  (e.g. ucs2).