directory re-organization (keeps the old build system)

there is no internal modification of any file in this commit

files are moved into directories according to established standards in
sourcecode distribution; these directories contain:

 src - Files that are used in constructing the executable binaries,
       but are not installed.

 doc - Files in HTML and text format that document usage, quirks of
       the implementation, and contributor checklists.

 locale - Files that contain human language translation of strings
          used in the program

 contrib - Files contributed from distributions or other third party
 	   implementing scripts and auxiliary programs

src/json/json_spirit_value.cpp

@@ -0,0 +1,8 @@
+/* Copyright (c) 2007 John W Wilkinson
+
+   This source code can be used for any purpose as long as
+   this comment is retained. */
+
+// json spirit version 2.00
+
+#include "json_spirit_value.h"