Update changelog to reflect additional changes made to the egd-locations.

     [Geoff Thorpe]

  +) Add automatic query of EGD sockets in RAND_poll() for the unix variant.

     If an EGD or PRNGD is running and enough entropy is returned, automatic

     seeding like with /dev/[u]random will be performed.

     Positions tried are: /etc/entropy, /var/run/egd-pool.

     If /dev/[u]random devices are not available or do not return enough

     entropy, EGD style sockets (served by EGD or PRNGD) will automatically

     be queried.

     The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and

     /etc/entropy will be queried once each in this sequence, quering stops

     when enough entropy was collected without querying more sockets.

     [Lutz Jaenicke]

  +) Change the Unix RAND_poll() variant to be able to poll several