fix adding new PYTHONPATH in sys.path
 cd /root/rpmbuild/BUILD/dhcpy6d
changed default address to local link fe80
make logging more verbose in several situations
added new MySQL configuration options that allows to specify table prefix&suffix
Squashed commit of the following:

commit cbbbe258eff713034f2fe9d0646a50a6b586dea4
Author: Petr Vokac <vokac@fjfi.cvut.cz>
Date:   Tue Mar 18 02:14:14 2014 +0100

    replaced unused broken code that reads neighborhood table on linux
    directly from kernel using netlink with new code that should work

    updated dhcpy6d code to use new netlink code to do neighborhood lookups