kernelshark: Show only one pop up warning message after loading file
kernelshark: Show only one pop up warning message after loading file

Instead of showing every little error that happened while loading
a trace file, show only one message at the end. Have the warnings
go to the display status and the user can reference them there.

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

bigzz/trace-cmd,bigzz/trace-cmd