native-fetcher: fix invalid read
Merge pull request #265 from pagespeed/oschaaf-native-fetcher-invalid-read

native-fetcher: fix invalid read
logging: properly interpret google-style LOG() levels
Merge pull request #245 from pagespeed/jefftk-fix-logging

logging: properly interpret google-style LOG() levels
system-test: experiment setup
system-test: retain custom headers
system-test: only run non-local stats test if hostname is set
readme: numbering update; we don't depend on mod_pagespeed binaries
readme: fix numbering try 2
readme: document tarballs
readme: hierarchy
readme: smaller location blocks; better doc
readme: pull tengine and the complex method out into wiki pages
readme: remove accept-encoding proxy documentation
readme: remove broken php5-fpm instructions
readme: move more details to wiki pages
readme: clarify how to convert mod_pagespeed config to ngx_pagespeed
readme: point people to the list of missing features
logging: fix conflict with syslog
map-proxy-domain: support without tests

In pull request #247 I added tests for CDN support for MapProxyDomain, but this
depends on FetchProxy which depends on per-server-block fetchers.  In
mod_pagespeed there's a complicated map that means you have one serf fetcher for
each distinct value of FetchProxy, and we need that here too.

So for now, commit the minor supporting changes without the test code, and leave
the testing until we have the time to properly support FetchProxy.