Needed to be able to have multiple masters connected 
to same slave server with different filters.


sql/Makefile.am:
  Add table_filter.cc
sql/log.cc:
  Use Table_filter
sql/log_event.cc:
  Use Table_filter
sql/mysql_priv.h:
  Use Table_filter
sql/mysqld.cc:
  Use Table_filter
sql/repl_failsafe.cc:
  Use Table_filter
sql/slave.cc:
  Use Table_filter
sql/slave.h:
  Use Table_filter
sql/sql_acl.cc:
  Use Table_filter
sql/sql_class.h:
  Use const since they should not be changed
sql/sql_parse.cc:
  Use Table_filter
sql/sql_repl.cc:
  Use Table_filter
sql/sql_repl.h:
  Use Table_filter