FYI: add user_breakpoint_p

[Tom Tromey]

>>>>> "Joel" == Joel Brobecker <brobecker@adacore.com> writes:

Joel> Just one question about style:

>> -    if (!user_settable_breakpoint (tp) || tp->number < 0)
>> +    if (! user_breakpoint_p (tp))

Joel> Do we agree on whether to write this as the above, or whether we should
Joel> not have a space between the '!' and the expression being negated:

I have trouble remembering whether we have a rule here.
I will remove the space.  It doesn't matter to me either way if we have
it or not.

Tom