[bug-gnulib] fatal-signal.c's install_handlers catches ignored signals?

[Paul Eggert]

I was considering using fatal-signal.c but noticed that
install_handlers catches signals even if they're being ignored.  The
usual tradition is to continue to ignore signals if they were ignored
at startup.  The usual way to do this is to use sigaction to inspect
whether they're being ignored.  I'm mentioning this rather than
supplying a patch since I don't know whether the current behavior is
intentional.