Big clean up to fix issues identified by the inspect program.

Regenerate docs.

test/helper_macro_test.cpp

@@ -1,3 +1,5 @@
+//  (C) Copyright John Maddock 2014-9. 
+//  (C) Copyright Andrey Semashev 2017. 
 //  Use, modification and distribution are subject to the  
 //  Boost Software License, Version 1.0. (See accompanying file  
 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)