nginx-0.1.39-RELEASE import

    *) The changes in the ngx_http_charset_module: the "default_charset"
       directive was canceled; the "charset" directive sets the response
       charset; the "source_charset" directive sets the source charset only.

    *) Bugfix: the backend "WWW-Authenticate" header line did not
       transferred while the 401 response code redirecting.

    *) Bugfix: the ngx_http_proxy_module and ngx_http_fastcgi_module may
       close a connection before anything was transferred to a client; the
       bug had appeared in 0.1.38.

    *) Workaround: the Linux glibc crypt_r() initialization bug.

    *) Bugfix: the ngx_http_ssi_module did not support the relative URI in
       the "include virtual" command.

    *) Bugfix: if the backend response had the "Location" header line and
       nginx should not rewrite this line, then the 500 code response body
       was transferred; the bug had appeared in 0.1.29.

    *) Bugfix: some directives of the ngx_http_proxy_module and
       ngx_http_fastcgi_module were not inherited from the server to the
       location level; the bug had appeared in 0.1.29.

    *) Bugfix: the ngx_http_ssl_module did not support the certificate
       chain.

    *) Bugfix: the ngx_http_autoindex_module did not show correctly the
       long file names; the bug had appeared in 0.1.38.

    *) Bugfixes in IMAP/POP3 proxy in interaction with a backend at the
       login state.
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 428253c..a38f65b 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -52,10 +52,15 @@
 
     size_t                          send_lowat;
     size_t                          header_buffer_size;
+
     size_t                          busy_buffers_size;
     size_t                          max_temp_file_size;
     size_t                          temp_file_write_size;
 
+    size_t                          busy_buffers_size_conf;
+    size_t                          max_temp_file_size_conf;
+    size_t                          temp_file_write_size_conf;
+
     ngx_uint_t                      next_upstream;
     ngx_uint_t                      method;
 
@@ -95,6 +100,9 @@
 typedef struct {
     ngx_list_t                      headers;
 
+    ngx_uint_t                      status_n;
+    ngx_str_t                       status_line;
+
     ngx_table_elt_t                *status;
     ngx_table_elt_t                *date;
     ngx_table_elt_t                *server;
@@ -112,6 +120,7 @@
     ngx_table_elt_t                *last_modified;
     ngx_table_elt_t                *location;
     ngx_table_elt_t                *accept_ranges;
+    ngx_table_elt_t                *www_authenticate;
 
 #if (NGX_HTTP_GZIP)
     ngx_table_elt_t                *content_encoding;