fix a few cores. assume any ip that matches
the c-block of any host in hosts.conf file is
"local". clarified specs in admin.html.
localhosts.conf file takes precedence
over hosts.conf file so you can put your
customizations into there and easily
do a gitpull without having to worry about
hosts.conf being checked in and stuff.
fix old bug.
fix docid range splitting logic.
Merge branch 'master' into diffbot

Conflicts:
	PageResults.cpp