build rbtree to store upstreams so as to improve performance when searching for upstreams
fix a format issue
fix a format issue
use implicit_upstreams together with rbtree to modify performance when upstream is not found in rbtree
use rbtree to make configuration loading faster
add deb packaging config
调整session_sticky模块的顺序
Merge pull request #441 from dinic/session_sticky_dso

调整session_sticky模块的顺序
bugfix: do not copy '.so' to destination directory.
Merge pull request #442 from cfsego/dso_bugfix1

bugfix: do not copy '.so' to destination directory.
Merge pull request #418 from betetrpm/master

add debian/ubuntu packagine config
Update README.md

- break long dependency line
- defining `DEB_BUILD_OPTIONS` is like export
- `tengine_2.0.2-1_amd64.deb` is just an example
Merge pull request #443 from szepeviktor/patch-2

genius work!
I feel it now more attractive
Thank you very much
add ngx_http_reqstat_module
docs: more information for proxy_buffering_off directive if enabling spdy

Thanks for Arlen Stalwick's advice.

More details are available here:
 https://github.com/alibaba/tengine/issues/444
Merge pull request #447 from chobits/master

docs: more information for proxy_buffering_off directive if enabling spdy
修复session sticky加上option=indirect选项导致http 变量乱掉的bug
Merge pull request #449 from dinic/session_sticky_boke_bugfix

修复session sticky加上option=indirect选项导致http 变量乱掉的bug
Build an red-black tree to store upstreams added by the directive "upstream"
Thanks to SarahWang
Merge pull request #446 from cfsego/reqstat_new

可以基于虚拟主机统计的统计模块