- signals where sometimes sent too early when setting up subscriptions


ndb/include/kernel/signaldata/DumpStateOrd.hpp:
  added dump for active subscriptions in cmvmi
ndb/src/kernel/blocks/cmvmi/Cmvmi.cpp:
  added dump for active subscriptions in cmvmi
ndb/src/mgmsrv/MgmtSrvr.cpp:
  bug in that signals where sent prior to api reg conf arrived, causing thrown away signals and subsequent hangs in mgmtserver
  also add retry if node connected but not yet received api reg conf
ndb/src/ndbapi/ClusterMgr.cpp:
  added status variable m_api_reg_conf in cluster manager to correctly be able to determine if a node is sendable
ndb/src/ndbapi/ClusterMgr.hpp:
  added status variable m_api_reg_conf in cluster manager to correctly be able to determine if a node is sendable
ndb/src/ndbapi/SignalSender.cpp:
  assert to see that node is sendable when signal is sent
ndb/src/ndbapi/SignalSender.hpp:
  manke metchd const