WL#3931 (Multi-table statement involving self-logging engines):

Adding logic to generate error if more than one engine is involved in
the statement and at least one engine is self-logging (i.e., has the
HA_HAS_OWN_BINLOGGING table flags set).


mysql-test/r/binlog_multi_engine.result:
  Result change.
mysql-test/t/binlog_multi_engine.test:
  Errors now generated for some statements due to NDB setting the
  HA_HAS_OWN_BINLOGGING flag.
sql/sql_base.cc:
  Computing both the intersection and union of all table flags in the
  logic to decide logging format.
  
  Calculating if there are more than one engine involved in the statement.
  For this case, we only consider engines that hold tables that data is
  written to.
  
  Adding logic to generate error if more than one engine is involved in
  the statement and at least one engine is self-logging (i.e., has the
  HA_HAS_OWN_BINLOGGING table flags set).
  ---
  Renaming variable.