sudo security and bug fix update

1.7.2p1-14.2 - added a workaround for a race condition in handling child processes Resolves: rhbz844978 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 -...