bugfix
add appspot.com
bugfix for gtalk
support multiple hosts address
Update proxy.py
update goagent
update goagent
delay trigger pac update
fix pac autoupdate
refine request headers
fix pac dir error issue
Merge pull request #147 from binyuj/patch-1

fix pac dir error issue
refine rangefetch
add ablock-chinalist
add tanx/alimama
add $image adblock rule support
add $script adblock rule support
fix adblock bugs
upgrade to gevent 1.0rc3
Fixed, start_new_thread in stdlib "thread" takes no keyword arguments