add nofallback option and RAW_FORWARD target for urls which should no…

…t fetch with GAE

v2.1.15; fix '404 not found' bug; add PAGE target:

if 'local\misc\page.html' is missing, return empty response,
else format its content with some values and return it.

v2.1.14; use dnsResolveEx in PAC if possible; make_config.py support …

…third plugin

v2.1.13; reuse address

v2.1.12; try read nonstandard chunked response; config.web_register a…

…nd config.server_stop callback list for plugin api

v2.1.11; fix links; fix del_bad_hosts

v2.1.10; bugfix: slow after visit http://wallproxy; change priority f…

…or dns; version in WEB; truehttps; ftp bugfix for GUI

v2.1.9; add dns resolve list and new crlf

v2.1.8; fix reloader in linux; improve urlfetch

v2.1.7; support dns in tcp; remove close socket before POST