nginx-0.3.46-RELEASE import

    *) Feature: the "proxy_hide_header", "proxy_pass_header",
       "fastcgi_hide_header", and "fastcgi_pass_header" directives.

    *) Change: the "proxy_pass_x_powered_by", "fastcgi_x_powered_by", and
       "proxy_pass_server" directives were canceled.

    *) Feature: the "X-Accel-Buffering" response header line is supported
       in proxy mode.

    *) Bugfix: the reconfiguration bug and memory leaks in the
       ngx_http_perl_module.
diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index e467dde..a8aa983 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -10,6 +10,9 @@
 
 #define NGX_HTTP_MAX_REWRITE_CYCLES        10
 
+/* must be 2^n */
+#define NGX_HTTP_LC_HEADER_LEN             32
+
 
 #define NGX_HTTP_DISCARD_BUFFER_SIZE       4096
 #define NGX_HTTP_LINGERING_BUFFER_SIZE     4096
@@ -400,7 +403,6 @@
 
     unsigned                          fast_subrequest:1;
 
-    unsigned                          low_case_exten:1;
     unsigned                          header_timeout_set:1;
 
     unsigned                          proxy:1;
@@ -463,7 +465,10 @@
     u_char                           *header_name_end;
     u_char                           *header_start;
     u_char                           *header_end;
+
     ngx_uint_t                        header_hash;
+    ngx_uint_t                        lowcase_index;
+    u_char                            lowcase_header[NGX_HTTP_LC_HEADER_LEN];
 };