add a Request::raw_post buffer

This buffer is used when a Function::NeedToCopyRawPost() method returned true.

while here:
- remove WINIX_POST_PARAMS and WINIX_RAW_POST_STRING plugin messages

winixd/core/postmultiparser.h

@@ -4,8 +4,8 @@
  * Author: Tomasz Sowa <t.sowa@ttmath.org>
  */
 
-/* 
- * Copyright (c) 2008-2022, Tomasz Sowa
+/*
+ * Copyright (c) 2008-2023, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -66,7 +66,7 @@ public:
 	~PostMultiParser();
 
 	void SetConfig(Config * pconfig);
-	Error Parse(FCGX_Stream * in_, Request & request);
+	Error Parse(FCGX_Stream * in_, Request & request, bool copy_raw_post);
 
 private:
 
@@ -80,6 +80,7 @@ private:
 	int tmp_filename_postfix;
 	size_t in_buffer_ind;
 	size_t in_buffer_len;
+	bool copy_raw_post;
 
 	Request * request;