MPE_Signals_call_debugger - Process-killing signals invoke the MPE error handler
This invokes the MPE error handler which prints some information about the
signal and then attempts to start the debugger. Some systems will not support
calling the debugger.
You may need to ignore some signals, depending on the signals that the MPICH and
underlying communications code is using. You can do this in dbx by adding
"'ignore signal-name'" to your .dbxinit file. For example, to ignore
'SIGUSR1', use "'ignore USR1'".
Currently, there is no Fortran interface for this routine.