Composite of fixed code for mingw64(on windows) and general fixes for msvc.

1) (win32window) don't convert char to wide, use char direct to window.
2) (CMakeLists) Don't link one library as static CPPLIB and no others (mismatched allocations)
3) (macros) Fix Gwen macros for mingw64 on windows build.  (changes are by compiler(msc_ver) not platform)
4) (FileUtils) sprintf_s reference by platform, not compiler (mingw64 support)
5) (b3OpenCLUtils) fix bad define name _MSVC_VER->_MSC_VER
6) (compoundCollision) remove unused variables, simplify operation.
7) (impulseconstraint) remove duplicated code block

src/Bullet3OpenCL/Initialize/b3OpenCLUtils.cpp

@@ -619,7 +619,7 @@ cl_program b3OpenCLUtils_compileCLProgramFromString(cl_context clContext, cl_dev
 		strippedName = strip2(clFileNameForCaching,"\\");
 		strippedName = strip2(strippedName,"/");
 	
-#ifdef _MSVC_VER
+#ifdef _MSC_VER
 		sprintf_s(binaryFileName,B3_MAX_STRING_LENGTH,"%s/%s.%s.%s.bin",sCachedBinaryPath,strippedName, deviceName,driverVersion );
 #else
 		sprintf(binaryFileName,"%s/%s.%s.%s.bin",sCachedBinaryPath,strippedName, deviceName,driverVersion );