nginx-0.3.28-RELEASE import

    *) Feature: the "restrict_host_names" directive was canceled.

    *) Feature: the --with-cpu-opt=ppc64 configuration parameter.

    *) Bugfix: on some condition the proxied connection with a client was
       terminated prematurely.
       Thanks to Vladimir Shutoff.

    *) Bugfix: the "X-Accel-Limit-Rate" header line was not taken into
       account if the request was redirected using the "X-Accel-Redirect"
       header line.

    *) Bugfix: the "post_action" directive ran only after a successful
       completion of a request.

    *) Bugfix: the proxied response body generated by the "post_action"
       directive was transferred to a client.
diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index 9f4ae21..facd58e 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -77,11 +77,7 @@
  */
 #define NGX_HTTP_TO_HTTPS                  497
 
-/*
- * We use the special code for the requests with invalid host name
- * to distinguish it from 4XX in an error page redirection
- */
-#define NGX_HTTP_INVALID_HOST              498
+/* 498 is the canceled code for the requests with invalid host name */
 
 /*
  * HTTP does not define the code for the case when a client closed
@@ -107,13 +103,6 @@
 
 
 typedef enum {
-    NGX_HTTP_RESTRICT_HOST_OFF = 0,
-    NGX_HTTP_RESTRICT_HOST_ON,
-    NGX_HTTP_RESTRICT_HOST_CLOSE
-} ngx_http_restrict_host_e;
-
-
-typedef enum {
     NGX_HTTP_INITING_REQUEST_STATE = 0,
     NGX_HTTP_READING_REQUEST_STATE,
     NGX_HTTP_PROCESS_REQUEST_STATE,