added support for virtual master ( replicating from a directory with binlogs)
test case for backup/restore with virtual master


client/mysqltest.c:
  fix to accomodate for new test case
mysql-test/mysql-test-run.sh:
  do not automagically start slave
sql/log.cc:
  support for virtual master
sql/log_event.cc:
  fix for mysqlbinlog
sql/log_event.h:
  fix for mysqlbinlog
sql/mysqlbinlog.cc:
  fix for mysqlbinlog
sql/slave.cc:
  virtual master
sql/slave.h:
  virtual master
sql/sql_class.h:
  clean-up/fixes for virtual master
sql/sql_repl.cc:
  cleanup/fixes for virtual master
sql/sql_repl.h:
  virtual master