Create DSO symlinks automatically
    
    If there are unpackaged symlinks, build will fail with unpackaged files.
    People can %undefine __brp_ldconfig if they need to and they should make
    sure that they call ldconfig themselves.
    
    Right now, script doesn't guide packagers what to do, but it's not
    prerequisite.
    
    Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>