this should not remain active after eina has been deactivated, so ensure
that everything stops as expected
ref T7019
Differential Revision: https://phab.enlightenment.org/D6304
so xine module plus 2 eina dbug threads didnt set up signal
blocking/masks correctly. xine use ssigprocmask not pthread_sigmask
and the other 2 didnt even bother at all. fix this so these threads
all block most of these commnly caught signals so these threads never
get them