Changes with nginx 0.5.20 07 May 2007

    *) Feature: the "sendfile_max_chunk" directive.

    *) Feature: the "$http_...", "$sent_http_...", and "$upstream_http_..."
       variables may be changed using the "set" directive.

    *) Bugfix: a segmentation fault might occur in worker process if the
       SSI command 'if expr="$var = /"' was used.

    *) Bugfix: trailing boundary of multipart range response was
       transferred incorrectly.
       Thanks to Evan Miller.

    *) Bugfix: nginx did not work on Solaris/sparc64 if it was built by Sun
       Studio.
       Thanks to Andrei Nigmatulin.

    *) Bugfix: the ngx_http_perl_module could not built by Solaris make.
       Thanks to Andrei Nigmatulin.