- remove old defines NDB_WIN and NDB_WIN32 and
   use _WIN32 everywhere
 - remove hack for conflict with Windows #define NO_ERROR
   and rename the defines used in ndb code base
 - remove old unused NdbSchemaOp::createTable function
 - move unused NDB_RAND_MAX to ndb_rand.c
 - move define for using srandom() to only place it's used in NDBT_Test.cpp