C++/CLI wrappers and local static variables in Quantlib

SHA-1: 1c4a649def01f0af6e3ba934ce04a2a061e8a7e5

* Added 'CLI-safe' versions of singleton.hpp and currency classes to new folder CLI.  These files are intended to replace the existing QuantLib where CLI wrappers are being used and avoids issues associated with static variables and CLR shutdown.  Please see the ReadMe file in the CLI folder for further details.

SHA-1: d0ca3d60d26eec174c87ec945d7e86dfc64a93cb

* Added additional test case for Thirty360 daycounter (BondBasis and EurobondBasis).

SHA-1: edd6a905221b41381612f940f399e109989fe389

* Corrected flag usage in test-suite/bin/runtest.bat.