added start backup parameter to enable setting wait state
    and set different timeouts depending on waitstate
    moved listen of backup event out of backup and into separete thread
    thread created at connect() and destroyed at disconnect()
    added start backup command options "nowait" "wait completed" "wait started"
    fixed log level settings


ndb/include/mgmapi/mgmapi.h:
  added start backup parameter to enable setting wait state
ndb/src/common/debugger/EventLogger.cpp:
  changed to unsigned printout
ndb/src/mgmapi/mgmapi.cpp:
  added start backup parameter to enable setting wait state,
  and set different timeouts depending on waitstate
ndb/src/mgmclient/CommandInterpreter.cpp:
  moved listen of backup event out of backup and into separete thread
  thread created at connect() and destroyed at disconnect()
  added start backup command options "nowait" "wait completed" "wait started"
ndb/src/mgmsrv/MgmtSrvr.cpp:
  added more options to start backup to set wait state
  + set timeout depending on wait state
  + some debug printouts
ndb/src/mgmsrv/MgmtSrvr.hpp:
  added more options to start backup to set wait state
ndb/src/mgmsrv/Services.cpp:
  removed old backup code
  added use of stard backup otions
  fixed log level settings
ndb/test/src/NdbBackup.cpp:
  adopted to new wait state option in start backup