Update xml/cn/docs/http/ngx_http_log_module.xml
translated ngx_http_gunzip.module.xml
translated ngx_http_split_clients_module.xml
translated ngx_http_gunzip_module.xml
sync with offical docs at 20130122
Merge branch 'upstream'

Conflicts:
	xsls/style.xsls
	xslt/style.xslt
Update xml/cn/docs/http/ngx_http_gunzip_module.xml
Update xml/cn/docs/http/ngx_http_gunzip_module.xml
Update xml/cn/docs/http/ngx_http_gunzip_module.xml
Merge pull request #32 from nigelzeng/master

translate ngx_http_split_clients_module.xml & ngx_http_gunzip.module.xml file.
Update xml/cn/docs/hash.xml
Update xml/cn/docs/http/ngx_http_core_module.xml

update contents about hash
Update xml/cn/docs/http/ngx_http_referer_module.xml
Update xml/cn/docs/http/ngx_http_core_module.xml
Update xml/cn/docs/events.xml
Update xml/cn/docs/events.xml
Update xml/cn/docs/hash.xml
Merge pull request #33 from cfsego/master

哈希设置相关
translate ngx_http_random_index_module.xml
translate ngx_http_charset_module.xml