[RFC] Let "gcore" command accept a suffix argument

[Michael Snyder]

Joel Brobecker wrote:
>> OK.  We can change "eval" to other cmd.   What about "ceval"?
> 
> eval is really a natural command name. Can we perhaps think of
> another command name for the tracepoint stuff?
> 

Like "collect", "eval" in the tracepoint context is a command
that does not make any sense in any other context.

Maybe we can just decide from context which command we mean.