local flag in ndbapi to set -O2 since problems occur with -O3
pc.hpp, Emulator.hpp, Emulator.cpp, ErrorReporter.cpp:
  USE_EMULATED_JAM -> !NO_EMULATED_JAM
ErrorReporter.hpp:
  removed NDEBUG and removed THREAD_ASSERT
Dbdict.cpp:
  NDB_DEBUG -> VM_TRACE
configure.in:
  cleaned up ndb CXX flags and added optional flag possibility


configure.in:
  cleaned up ndb CXX flags and added optional flag possibility
ndb/src/kernel/blocks/dbdict/Dbdict.cpp:
  NDB_DEBUG -> VM_TRACE
ndb/src/kernel/error/ErrorReporter.cpp:
  USE_EMULATED_JAM -> !NO_EMULATED_JAM
ndb/src/kernel/error/ErrorReporter.hpp:
  removed NDEBUG and removed THREAD_ASSERT
ndb/src/kernel/vm/Emulator.cpp:
  USE_EMULATED_JAM -> !NO_EMULATED_JAM
ndb/src/kernel/vm/Emulator.hpp:
  USE_EMULATED_JAM -> !NO_EMULATED_JAM
ndb/src/kernel/vm/pc.hpp:
  USE_EMULATED_JAM -> !NO_EMULATED_JAM
ndb/src/ndbapi/Makefile.am:
  local flag in ndbapi to set -O2 since problems occur with -O3