Changes with nginx 1.5.2                                         02 Jul 2013

*) Feature: now several "error_log" directives can be used.

*) Bugfix: the $r->header_in() embedded perl method did not return value
of the "Cookie" and "X-Forwarded-For" request header lines; the bug
had appeared in 1.3.14.

*) Bugfix: in the ngx_http_spdy_module.
Thanks to Jim Radford.

*) Bugfix: nginx could not be built on Linux with x32 ABI.
Thanks to Serguei Ivantsov.
Changes with nginx 1.5.3                                         30 Jul 2013

*) Change in internal API: now u->length defaults to -1 if working with
backends in unbuffered mode.

*) Change: now after receiving an incomplete response from a backend
server nginx tries to send an available part of the response to a
client, and then closes client connection.

*) Bugfix: a segmentation fault might occur in a worker process if the
ngx_http_spdy_module was used with the "client_body_in_file_only"
directive.

*) Bugfix: the "so_keepalive" parameter of the "listen" directive might
be handled incorrectly on DragonFlyBSD.
Thanks to Sepherosa Ziehau.

*) Bugfix: in the ngx_http_xslt_filter_module.

*) Bugfix: in the ngx_http_sub_filter_module.
Merge remote-tracking branch 'dev-nginx/master' into feature

* dev-nginx/master:
  Changes with nginx 1.5.3                                         30 Jul 2013
  Changes with nginx 1.5.2                                         02 Jul 2013
Merge branch 'feature'

* feature:
  Changes with nginx 1.5.3                                         30 Jul 2013
  Changes with nginx 1.5.2                                         02 Jul 2013