a bit more ucs2 compatibility 


sql/des_key_file.cc:
  use latin1
sql/field.cc:
  use latin1
sql/field_conv.cc:
  removed default_charset_info
sql/hostname.cc:
  removed default_charset_info
sql/item_timefunc.cc:
  gets closer to ucs2 compatibility
sql/log_event.cc:
  removed default_charset_info
sql/set_var.h:
  removed default_charset_info