OpenSSL now uses pthread_atfork(), and this requires -lpthread on Linux
to compile.  Introduced NGX_LIBPTHREAD to add it as appropriate, similar
to existing NGX_LIBDL.

    *) Feature: the "access_log" supports the "buffer=" parameter.

    *) Bugfix: nginx could not be built on platforms different from i386,
       amd64, sparc, and ppc; the bug had appeared in 0.3.2.

    *) Change: now the IMAP/POP3 proxy do not send the empty login to
       authorization server.

    *) Feature: the "log_format" supports the variables in the $name form.

    *) Bugfix: if at least in one server was no the "listen" directive,
       then nginx did not listen on the 80 port; the bug had appeared in
       0.3.3.

    *) Bugfix: if the URI part is omitted in "proxy_pass" directive, the
       the 80 port was always used.

    *) Bugfix: the ngx_http_stub_status_module showed incorrect statistics
       if "rtsig" method was used or if several worker process ran on SMP.

    *) Bugfix: nginx could not be built by the icc compiler on Linux or if
       the zlib-1.2.x library was building from sources.

    *) Bugfix: nginx could not be built on NetBSD 2.0.

    *) Bugfix: the proxied request was sent without arguments if the
       request contains "//", "/./", "/../" or "%XX".

    *) Bugfix: the large compressed responses may be transferred not
       completely.

    *) Bugfix: the files bigger than 2G was not transferred on Linux that
       does not support sendfile64().

    *) Bugfix: while the build configuration on Linux the
       --with-poll_module parameter was required; the bug had appeared in
       0.1.8.

    *) Feature: the ngx_http_autoindex_module and the autoindex directive.

    *) Feature: the proxy_set_x_url directive.

    *) Bugfix: proxy module may get caught in an endless loop when sendfile
       is not used.