[CLN-list] Compile with MSVC successful

[Jan Rheinlaender]

I successfully compiled CLN-1.3.1 with Microsoft Visual C++. You can find an account of my adventures on http://sourceforge.net/apps/mediawiki/ooo-imath/index.php?title=Installation#Compilation_with_Microsoft_Visual_C.2B.2B 

The benchmarks, examples and tests compile and both tests claim to pass successfully.

Since I am not an expert programmer, I have no idea if my source code modifications are acceptable or "evil". 

Have fun,
   Jan