add optimization flag for MSVC and heavy tests

remove unsupported namespace

unsupported/Eigen/AdolcForward

@@ -59,8 +59,6 @@
 
 namespace Eigen {
 
-namespace unsupported {
-
 /** \ingroup Unsupported_modules
   * \defgroup AdolcForward_Module Adolc forward module
   * This module provides support for adolc's adouble type in forward mode.
@@ -79,8 +77,6 @@ namespace unsupported {
   */
   //@{
 
-} // namespace unsupported
-
 } // namespace Eigen
 
 // the Adolc's type adouble is defined in the adtl namespace