minor update
fix round from incrementing while spiders out.
fix spiders sticking when coll is immediately deleted
after seeding a url.
fixed core from null json
Merge branch 'master' of git@github.com:gigablast/open-source-search-engine
try to fix core from pthreads logging msgs.
include pthread.h
forgot to unlock thread lock
fix bugs of pthreads junk not being async safe.
we were calling fprintf from a signal handler
(interrupt) while fprintf was currently in progress
and the pthread junk did not like that.
a few bugfixes imported from neo github subdir
Merge branch 'master' into diffbot
Merge branch 'diffbot' into diffbot-testing

Conflicts:
	Spider.cpp