unify term/crash handlers, include SIGINT

We print different things for crashes and for external termination
signals, which is a waste.  Might as well print the union for all.

This adds SIGINT (Ctrl-C, signal 2, exit code 130) to the list too.

(The flag to ignore sigint should still work.)

Change-Id: I91db023eb68e4798eed15d1f4d76b20b52a174cc
Reviewed-on: https://skia-review.googlesource.com/138160
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
1 file changed