added a workaround for a race condition in handling child processes
Resolves: rhbz#844978
[1.7.2p1-14.1]
dont remove the sudoers: line from nsswitch.conf on update
use safe temporary file for nsswitch.conf
call restorecon after modifying nsswitch.conf
fixed command escaping
patch: Use SIG_SETMASK when resetting signal mask instead of SIG_UNBLOCK
Resolves: rhbz#842759
Resolves: rhbz#844420
Resolves: rhbz#844419
Resolves: rhbz#844418
Resolves: rhbz#844443