Security update from 0.7.62 to 0.7.63.

Illuminate http_image_filter module.
Merge extra patch for fancy_index module from www/nginx-devel.

<ChangeLog>

*) Security: now "/../" are disabled in "Destination" request header
   line.

*) Change: minimum supported OpenSSL version is 0.9.7.

*) Change: the "ask" parameter of the "ssl_verify_client" directive was
   changed to the "optional" parameter and now it checks a client
   certificate if it was offered.
   Thanks to Brice Figureau.

*) Feature: now the "-V" switch shows TLS SNI support.

*) Feature: the $ssl_client_verify variable.
   Thanks to Brice Figureau.

*) Feature: the "ssl_crl" directive.
   Thanks to Brice Figureau.

*) Bugfix: the $ssl_client_cert variable usage corrupted memory; the
   bug had appeared in 0.7.7.
   Thanks to Sergey Zhuravlev.

*) Feature: now the start cache loader runs in a separate process; this
   should improve large caches handling.

*) Feature: now temporary files and permanent storage area may reside
   at different file systems.

*) Bugfix: nginx counted incorrectly disk cache size.

*) Change: now directive "gzip_disable msie6" does not disable gzipping
   for MSIE 6.0 SV1.

*) Bugfix: nginx always added "Vary: Accept-Encoding" response header
   line, if both "gzip_static" and "gzip_vary" were on.

*) Feature: the "proxy" parameter of the "geo" directive.

*) Feature: the ngx_http_geoip_module.

*) Feature: the "limit_rate_after" directive.
   Thanks to Ivan Debnar.

*) Feature: the "limit_req_log_level" and "limit_conn_log_level"
   directives.

*) Bugfix: now "limit_req" directive conforms to the leaky bucket
   algorithm.
   Thanks to Maxim Dounin.

*) Bugfix: in ngx_http_limit_req_module.
   Thanks to Maxim Dounin.

*) Bugfix: now nginx allows underscores in a request method.

*) Bugfix: "proxy_pass_header" and "fastcgi_pass_header" directives did
   not pass to a client the "X-Accel-Redirect", "X-Accel-Limit-Rate",
   "X-Accel-Buffering", and "X-Accel-Charset" lines from backend
   response header.
   Thanks to Maxim Dounin.

*) Bugfix: in handling "Last-Modified" and "Accept-Ranges" backend
   response header lines; the bug had appeared in 0.7.44.
   Thanks to Maxim Dounin.

*) Feature: the "image_filter_transparency" directive.

*) Feature: the "image_filter" directive supports variables for setting
   size.

*) Bugfix: in PNG alpha-channel support in the
   ngx_http_image_filter_module.

*) Bugfix: in transparency support in the ngx_http_image_filter_module.

*) Feature: now several "perl_modules" directives may be used.

*) Bugfix: ngx_http_perl_module responses did not work in subrequests.

*) Bugfix: nginx sent '\0' in a "Location" response header line on
   MKCOL request.
   Thanks to Xie Zhenye.

*) Bugfix: an "error_page" directive did not redirect a 413 error; the
   bug had appeared in 0.6.10.

*) Bugfix: in memory allocation error handling.
   Thanks to Maxim Dounin and Kirill A. Korinskiy.

</ChangeLog>

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