added shared memory config parameter, signum for use in signalling
    added global variable for holdign signum to be used for shared memory connection
    only fiddle with signals if it is set
    simplified common ndb client option handling


ndb/include/Makefile.am:
  added common defaults file
ndb/include/mgmapi/mgmapi_config_parameters.h:
  added shared memory config parameter, signum for use in signalling
ndb/include/transporter/TransporterDefinitions.hpp:
  added shared memory config parameter, signum for use in signalling
ndb/include/util/ndb_opts.h:
  simplified common ndb client option handling
ndb/src/common/mgmcommon/IPCConfig.cpp:
  added shared memory config parameter, signum for use in signalling
ndb/src/common/portlib/NdbThread.c:
  added global variable for holdign signum to be used for shared memory connection
  only block signals if shared memory is used
ndb/src/common/transporter/SHM_Transporter.cpp:
  use signum in new global variable for shared memory signalling
ndb/src/common/transporter/TransporterRegistry.cpp:
  use signum in new global variable for shared memory signalling
  only fiddle with signals if it is set
ndb/src/cw/cpcd/main.cpp:
  ndb_opts not really used
ndb/src/kernel/vm/Configuration.cpp:
  simplified common ndb client option handling
ndb/src/mgmclient/main.cpp:
  simplified common ndb client option handling
ndb/src/mgmsrv/ConfigInfo.cpp:
  added shared memory config parameter, signum for use in signalling
ndb/src/mgmsrv/main.cpp:
  simplified common ndb client option handling
ndb/tools/delete_all.cpp:
  simplified common ndb client option handling
ndb/tools/desc.cpp:
  simplified common ndb client option handling
ndb/tools/drop_index.cpp:
  simplified common ndb client option handling
ndb/tools/drop_tab.cpp:
  simplified common ndb client option handling
ndb/tools/listTables.cpp:
  simplified common ndb client option handling
ndb/tools/restore/restore_main.cpp:
  simplified common ndb client option handling
ndb/tools/select_all.cpp:
  simplified common ndb client option handling
ndb/tools/select_count.cpp:
  simplified common ndb client option handling
ndb/tools/waiter.cpp:
  simplified common ndb client option handling