+ revised error messages after feedback
+ revides classifications and status
+ removed all progError(..0..) to make sure all error invocations have an error code
+ added some new error codes to replace some generic usage of SYSTEM_ERROR
+ removed some unused codes


configure.in:
  Bug #11749  	No message slogan found for Signal 8 received. (need better message)
ndb/include/kernel/signaldata/SystemError.hpp:
  + removed some unused codes
ndb/src/kernel/blocks/dbacc/Dbacc.hpp:
  + removed all progError(..0..) to make sure all error invocations have an error code
ndb/src/kernel/main.cpp:
  Bug #11749  	No message slogan found for Signal 8 received. (need better message)