Test: Add math suite to Visual Studio solution.

VisualC/tests/testautomation/testautomation.vcxproj

@@ -209,6 +209,7 @@
     <ClCompile Include="..\..\..\test\testautomation_hints.c" />
     <ClCompile Include="..\..\..\test\testautomation_keyboard.c" />
     <ClCompile Include="..\..\..\test\testautomation_main.c" />
+    <ClCompile Include="..\..\..\test\testautomation_math.c" />
     <ClCompile Include="..\..\..\test\testautomation_mouse.c" />
     <ClCompile Include="..\..\..\test\testautomation_pixels.c" />
     <ClCompile Include="..\..\..\test\testautomation_platform.c" />