updated the Visual Studio Version to 13.0

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@766 38e36fca-e102-11dd-b6c5-65a6809f2f0c
changed stack reserve size for OCC Configuration

git-svn-id: http://svn.code.sf.net/p/netgen-mesher/code/netgen@767 38e36fca-e102-11dd-b6c5-65a6809f2f0c