DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL a constant.


innobase/data/data0type.c:
  Remove data_mysql_latin1_swedish_charset_coll.
innobase/include/data0type.h:
  Replace variable data_mysql_latin1_swedish_charset_coll
  with constant DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL.
innobase/rem/rem0cmp.c:
  Replace variable data_mysql_latin1_swedish_charset_coll
  with constant DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL.
sql/ha_innodb.cc:
  Eliminate variable data_mysql_latin1_swedish_charset_coll.
  Add an assertion about DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL.