detects Microsoft C Compiler
msvc = findmsvccompiler()
returns a string to identify Visual studio version.
| string | Visual Studio version |
| msvc70 | Microsoft Visual Studio 2002 Professional or above. |
| msvc71 | Microsoft Visual Studio 2003 Professional or above. |
| msvc80express | Microsoft Visual Studio 2005 Express Edition. |
| msvc80std | Microsoft Visual Studio 2005 Standard Edition. |
| msvc80pro | Microsoft Visual Studio 2005 Professional or above. |
| msvc90express | Microsoft Visual Studio 2008 Express Edition. |
| msvc90std | Microsoft Visual Studio 2008 Standard Edition. |
| msvc90pro | Microsoft Visual Studio 2008 Professional or above. |
| msvc100express | Microsoft Visual Studio 2010 Express Edition |
| msvc100pro | Microsoft Visual Studio 2010 Professional or above. |
| unknown | not detected or unknown version. |
detects Microsoft C Compiler.