- Fix valgrind warnings
 - Remove static db, schema and table name buffers from Ndb.cpp


mysys/thr_alarm.c:
  Initialise sact to zero
ndb/include/kernel/ndb_limits.h:
  Set MAX_ATTR_NAME_SIZE to NAME_LEN which is tha maximum in MySQL
ndb/include/kernel/signaldata/GetTabInfo.hpp:
  Clean up
ndb/include/ndbapi/Ndb.hpp:
  Remove NDB_MAX_INTERNAL_NAME_LENGTH and all char buffers for schema, db and tablename.
  Made them dynamic and moved to NdbImpl.hpp
ndb/include/ndbapi/ndbapi_limits.h:
  Remove the static length's of attr, db, schema and table name.
ndb/src/common/transporter/Packer.cpp:
  Set theSignalId to ~0 when unpacking signal
ndb/src/ndbapi/Ndb.cpp:
  Moved schema, database and tablename to NdbImpl.hpp
ndb/src/ndbapi/NdbDictionaryImpl.cpp:
  Add NdbIndexImpl::init and NdbEventImpl::init
  Init all vars in NdbIndexImpl, NdbEventImpl, NdbTableImpl and NdbIndexImpl
  Delete the pseudo column NDB$RANGE_NO
  Copy tablename to internal buff in NdbDictInterface to get proper alignment.
  Convert length of table name from bytes words, when setting sz of LinearSectionPtr
  Set LinearSectionPtr array size to number of LinearSections used - save some stack.
ndb/src/ndbapi/NdbDictionaryImpl.hpp:
  Add NdbEventImpl::init and NdbIndexImpl::init
  Remove clearNewProperties and copyNewProperties, it's easier to check if all vars are initied if it's done in the same func.
  Add buffer for tabname ti NdbDictInterface, memset it to 0 in initializer.
ndb/src/ndbapi/NdbImpl.hpp:
  Use BaseString for table, schema and db names.
ndb/src/ndbapi/Ndbinit.cpp:
  Move schema and db name to NdbImpl and use BaseString
ndb/src/ndbapi/ndb_cluster_connection.cpp:
  Destroy ndb_global_event_buffer_mutex and ndb_print_state_mutex
sql/ha_ndbcluster.cc:
  Check if pTrans is not null before calling closeTransaction
  Remove NDB_MAX_ATTR_NAME_SIZE
  Remove truncation of attr names. When attr name length is same in NDB as in MySQL this will be checked in functin check_column_name