Fixed data corruption bug in query cache.
Made queries be dependent of the database in use.


Docs/manual.texi:
  Update binary log reference
client/mysql.cc:
  Removed warning
include/thr_alarm.h:
  Cleanup of alarm macros.
libmysql/libmysql.c:
  Portabiliy fix
libmysql/net.c:
  Cleanup of alarm macros.
mysql-test/t/rpl_get_lock.test:
  Fixed results after merge.
mysys/my_bitmap.c:
  Removed warning.
sql/log_event.cc:
  Use thd->db_length
sql/mini_client.cc:
  Cleanup of alarm macros.
sql/net_serv.cc:
  Cleanup of alarm macros.
sql/sql_acl.cc:
  Use thd->db_length
sql/sql_cache.cc:
  Store used database together with the query.
sql/sql_class.cc:
  Use thd->db_length
sql/sql_class.h:
  Use thd->db_length
sql/sql_db.cc:
  Use thd->db_length
sql/sql_parse.cc:
  Use thd->db_length
sql/sql_udf.cc:
  Use thd->db_length