Changes with nginx 1.0.13 05 Mar 2012
*) Feature: the "return" and "error_page" directives can now be used to return 307 redirections.
*) Bugfix: a segmentation fault might occur in a worker process if the "resolver" directive was used and there was no "error_log" directive specified at global level. Thanks to Roman Arutyunyan.
*) Bugfix: memory leaks. Thanks to Lanshun Zhou.
*) Bugfix: nginx might log incorrect error "upstream prematurely closed connection" instead of correct "upstream sent too big header" one. Thanks to Feibo Li.
*) Bugfix: on ZFS filesystem disk cache size might be calculated incorrectly; the bug had appeared in 1.0.1.
*) Bugfix: the number of internal redirects to named locations was not limited.
*) Bugfix: temporary files might be not removed if the "proxy_store" directive was used with SSI includes.
*) Bugfix: in some cases non-cacheable variables (such as the $args variable) returned old empty cached value.
*) Bugfix: the "proxy_redirect" directives might be inherited incorrectly.
*) Bugfix: nginx could not be built with the ngx_http_perl_module if the --with-openssl option was used.
*) Bugfix: nginx could not be built by the icc 12.1 compiler.