Adding an event that can be used to denote that an incident occured
on the master. The event can be used to denote a gap in the replication
stream, but can also be used to denote other incidents.

In addition, the injector interface is extended with functions to
generate an incident event. The function will also rotate the binary
log after generating an incident event to get a fresh binary log.


client/Makefile.am:
  Adding file rpl_constants.h with constants for replication.
mysql-test/extra/binlog_tests/binlog.test:
  Binlog position change
mysql-test/extra/binlog_tests/binlog_insert_delayed.test:
  Binlog position change
mysql-test/extra/binlog_tests/ctype_cp932_binlog.test:
  Binlog position change
mysql-test/extra/binlog_tests/ctype_ucs_binlog.test:
  Binlog position change
mysql-test/extra/binlog_tests/mix_innodb_myisam_binlog.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_deadlock.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_log.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_multi_query.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_row_charset.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_row_sp002.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_row_sp003.test:
  Binlog position change
mysql-test/extra/rpl_tests/rpl_stm_charset.test:
  Binlog position change
mysql-test/include/show_binlog_events.inc:
  Binlog position change
mysql-test/r/binlog_row_binlog.result:
  Result change
mysql-test/r/binlog_row_ctype_ucs.result:
  Result change
mysql-test/r/binlog_row_insert_select.result:
  Result change
mysql-test/r/binlog_row_mix_innodb_myisam.result:
  Result change
mysql-test/r/binlog_stm_binlog.result:
  Result change
mysql-test/r/binlog_stm_ctype_ucs.result:
  Result change
mysql-test/r/binlog_stm_insert_select.result:
  Result change
mysql-test/r/binlog_stm_mix_innodb_myisam.result:
  Result change
mysql-test/r/ctype_cp932_binlog_row.result:
  Result change
mysql-test/r/ctype_cp932_binlog_stm.result:
  Result change
mysql-test/r/flush_block_commit_notembedded.result:
  Result change
mysql-test/r/rpl_000015.result:
  Result change
mysql-test/r/rpl_change_master.result:
  Result change
mysql-test/r/rpl_deadlock_innodb.result:
  Result change
mysql-test/r/rpl_flushlog_loop.result:
  Result change
mysql-test/r/rpl_loaddata.result:
  Result change
mysql-test/r/rpl_loaddata_s.result:
  Result change
mysql-test/r/rpl_log_pos.result:
  Result change
mysql-test/r/rpl_ndb_charset.result:
  Result change
mysql-test/r/rpl_ndb_log.result:
  Result change
mysql-test/r/rpl_ndb_multi.result:
  Result change
mysql-test/r/rpl_rbr_to_sbr.result:
  Result change
mysql-test/r/rpl_rotate_logs.result:
  Result change
mysql-test/r/rpl_row_basic_11bugs.result:
  Result change
mysql-test/r/rpl_row_charset.result:
  Result change
mysql-test/r/rpl_row_create_table.result:
  Result change
mysql-test/r/rpl_row_delayed_ins.result:
  Result change
mysql-test/r/rpl_row_drop.result:
  Result change
mysql-test/r/rpl_row_flsh_tbls.result:
  Result change
mysql-test/r/rpl_row_inexist_tbl.result:
  Result change
mysql-test/r/rpl_row_log.result:
  Result change
mysql-test/r/rpl_row_log_innodb.result:
  Result change
mysql-test/r/rpl_row_max_relay_size.result:
  Result change
mysql-test/r/rpl_row_reset_slave.result:
  Result change
mysql-test/r/rpl_row_until.result:
  Result change
mysql-test/r/rpl_server_id1.result:
  Result change
mysql-test/r/rpl_server_id2.result:
  Result change
mysql-test/r/rpl_sp.result:
  Result change
mysql-test/r/rpl_stm_charset.result:
  Result change
mysql-test/r/rpl_stm_flsh_tbls.result:
  Result change
mysql-test/r/rpl_stm_log.result:
  Result change
mysql-test/r/rpl_stm_max_relay_size.result:
  Result change
mysql-test/r/rpl_stm_multi_query.result:
  Result change
mysql-test/r/rpl_stm_reset_slave.result:
  Result change
mysql-test/r/rpl_stm_until.result:
  Result change
mysql-test/r/rpl_switch_stm_row_mixed.result:
  Result change
mysql-test/r/rpl_truncate_2myisam.result:
  Result change
mysql-test/r/rpl_truncate_3innodb.result:
  Result change
mysql-test/r/rpl_truncate_7ndb.result:
  Result change
mysql-test/r/user_var-binlog.result:
  Result change
mysql-test/t/binlog_row_mix_innodb_myisam.test:
  Binlog position change
mysql-test/t/binlog_stm_mix_innodb_myisam.test:
  Binlog position change
mysql-test/t/ctype_cp932_binlog_stm.test:
  Binlog position change
mysql-test/t/mysqlbinlog.test:
  Binlog position change
mysql-test/t/mysqlbinlog2.test:
  Binlog position change
mysql-test/t/rpl_loaddata_s.test:
  Binlog position change
mysql-test/t/rpl_log_pos.test:
  Binlog position change
mysql-test/t/rpl_row_basic_11bugs.test:
  Binlog position change
mysql-test/t/rpl_row_create_table.test:
  Binlog position change
mysql-test/t/rpl_row_flsh_tbls.test:
  Binlog position change
mysql-test/t/rpl_row_mysqlbinlog.test:
  Binlog position change
mysql-test/t/rpl_sp.test:
  Binlog position change
mysql-test/t/rpl_stm_flsh_tbls.test:
  Binlog position change
mysql-test/t/rpl_switch_stm_row_mixed.test:
  Binlog position change
mysql-test/t/user_var-binlog.test:
  Binlog position change
sql/Makefile.am:
  Adding file rpl_constants.h with constants for replication.
sql/log_event.cc:
  Changing prototype for read_str() to be const-correct and changing code to match that.
  Adding incident log event.
sql/log_event.h:
  Adding incident log event.
sql/rpl_injector.cc:
  Adding support for generating incidents into the binary log.
sql/rpl_injector.h:
  Adding support for generating incidents into the binary log.
sql/share/errmsg.txt:
  Adding new error message to indicate an incident.
sql/sql_parse.cc:
  Adding code to generate an incident log event just before executing a REPLACE
  if the variable "incident_database_resync_on_replace" is set.
mysql-test/r/rpl_incident.result:
  New BitKeeper file ``mysql-test/r/rpl_incident.result''
mysql-test/t/rpl_incident.test:
  New BitKeeper file ``mysql-test/t/rpl_incident.test''
sql/rpl_constants.h:
  New BitKeeper file ``sql/rpl_constants.h''