* breakpoint.c (break_command_really): Change return type to int.

	* breakpoint.c (break_command_really): Change return type to int.
	Return false if no breakpoint was created, true otherwise.
	(trace_command): Don't set the tracepoint count if no tracepoint
	was created.
	(ftrace_command): Ditto.
	(create_tracepoint_from_upload): Bail out if the tracepoint wasn't
	created in the breakpoints table.