1) libevent_extra requires symbols from libevent_core but does not have a DT_NEEDED for it
2) libevent_core and libevent_extra seem to contain exactly the same set of objects as
libevent. Why not make libevent depend on core/extra, or vice versa? This is a strange
waste of disk space.
*** This bug has been marked as a duplicate of bug 594028 ***