Merge pull request #166 from monadbobo/dso_fix2

fixed install error when install dso.
add TFS (Taobao FileSystem) module.
Merge pull request #170 from monadbobo/tfs2

add TFS (Taobao FileSystem) module.
added NGINX_DSO_PATH variable to nginx-test library
fixed the test cases in upstream.t
fixed coding style
Merge pull request #173 from zhuzhaoyuan/coding-style

fixed coding style
1. bugfix: read large file/custom file timeout or core
2. buffix: close file may failed (crc error) when write retry occurs
bugfix

if hit invalid local block, should not select data server
released Tengine-1.4.3
Merge pull request #174 from zhcn381/master

tfs module bugfix
Merge pull request #175 from yaoweibin/tengine-1.4.3-2

released Tengine-1.4.3
Merge pull request #172 from yaoweibin/dso_test_fix

Dso test fix
bumped version
fix client timed out bug.
should not return 500 when client timed out.
Merge pull request #176 from zhuzhaoyuan/bump-version-1.4.4

bumped version
merge nginx changes between 1.2.5 and 1.2.6
change cpu affinity to 'off' as default
update cpu affinity log, so that nginx will write down 'cpuset_setaffinity' rather than 'sched_setaffinity' in freebsd
bugfix

1. 当读文件请求返回status_msg时（如ds正在升级不能提供服务时）仍使用read_resp_msg去解析会导致解析错误，打印错误的内存数据到log中，并可能导致超时
2. 修改默认的从后端接收buf大小为2M，确保在下载文件返回应答的头时能够获得file_info
3. 在下载原生文件时如果得到了文件的file_info，就在应答头里面加上文件的last-modified时间
4. 修复一些错误的返回值
Merge pull request #177 from cfsego/merge

Merge changes between 1.2.5 and 1.2.6