trace-cmd: Have record -d disable function-trace option
trace-cmd: Have record -d disable function-trace option

Instead of totally disabling all function tracing for everyone
when the -d option is used, see if the new function-trace option
is available and use that. That option will only disable function
tracing for the latency tracers and not for everyone else.

Signed-off-by: Steven Rostedt <43232e92d70cc7aa53504ad0397085ee47bad87f@goodmis.org>

bigzz/trace-cmd,bigzz/trace-cmd