updated compilation instructions. need
to apt-get install gcc-multilib.
fix long-standing spider bug causing some
ip queues to not get fully spidered.
fix a bug of not reading enough spiderdb
records for a given "ip" because short reads
were causing us to bail out early. still not
sure as to the cause of the short reads.
fix bug of possibly not removing some locks
Merge branch 'master' into diffbot

Conflicts:
	Spider.cpp