[RFA] addresses/pointers vs numbers and expression evaluation

[David Taylor]

[...]
	* eval.c (parse_and_eval_long): New function.
	* value.h: Declare it.
	
	* breakpoint.c (breakpoints_info, maintenance_info_breakpoints):
	Call parse_and_eval_long, not parse_and_eval_address.
	* command.c (do_setshow_command): Ditto.
	* infcmd.c (step_1, signal_command, continue_command): Ditto.
	* infrun.c (signals_info): Ditto.
	* stack.c (set_backtrace_limit_command, backtrace_command_1,
	up_silently_base, down_silently_base): Ditto.
	* tracepoints.c (tracepoints_info, trace_find_command,
 	trace_find_tracepoint_command): Ditto.
	* valprint.c (set_radix): Ditto.
	* values.c (show_values): Ditto.
[...]

Committed.