disable 408 response record any access log with empty request.

In SSL application, Chrome browser may establish extra connections
and doesn't send any data. This will cause a 408 record in the access.log.
Now we could disable this meaningless record with directive 'log_empty_request'.
Merge pull request #195 from yaoweibin/log_empty_request_408

disable 408 response record any access log with empty request.
add session_sticky_modules for tengine
Merge pull request #205 from dinic/session_sticky2

add session_sticky_modules for tengine
added the CHANGES for tengine-1.4.4
Merge pull request #206 from yaoweibin/tengine-1.4.4-2

added the CHANGES for tengine-1.4.4
bumped version to tengine-1.4.5
Merge pull request #207 from yaoweibin/bump-tengine-1.4.5

bumped version to tengine-1.4.5
check args of session_sticky_module when start tengine
Merge pull request #211 from dinic/session_sticky5

check args of session_sticky_module when start tengine
modify the ngx_pcalloc function.
Merge pull request #214 from lnwdl/topic

modify the ngx_pcalloc function.
add "--enable-mods-shared=all" and "--enable-mods-static=all" config option.
Merge pull request #215 from monadbobo/dso_fix

add "--enable-mods-shared=all" and "--enable-mods-static=all" config opt...
update ngx_lua to 0.7.19
update lua test cases to version 0.7.19
Fixed: compile on 4.4.5 failed
fixed for nginx standard
Merge pull request #224 from magicbear/master

修正无法在debian 6.0.7下编译 (gcc 4.4.5)
merged the diff between nginx-1.2.7 and nginx-1.2.8