stop moving libreadline under /lib
    
    This is reverts e56f02adc2a135ef6e1e3ed1950242295ce9d0dc:
    (05:39:16 PM) mlichvar: /lib is a symlink to /usr/lib these days, so I guess it doesn't matter
    (05:39:44 PM) mlichvar: simpler spec is a better spec :)
    
    Signed-off-by: Igor Gnatenko <ignatenko@redhat.com>