feature: added new API function ngx.config.ngx_configure() to return the NGINX ./configure arguments string to the Lua land. thanks Tatsuhiko Kubo for the patch in #339.
renamed ngx.config.ngx_configure to ngx.config.nginx_configure.
doc: documented the new ngx.config.nginx_configure() function.
bugfix: an attempt to fix subrequests initiated by ngx.location.capture*() in the SPDY mode.
removed the spdy mode check from ngx.location.capture*() to renable this API again for SPDY requests.