HAVE_WIN32UI and HAVE_VFW checks and defines added.

cmake/checks/win32uitest.cpp

@@ -0,0 +1,11 @@
+#include <windows.h>
+
+int main(int argc, char** argv)
+{
+	CreateWindow(NULL /*lpClassName*/, NULL /*lpWindowName*/, 0 /*dwStyle*/, 0 /*x*/,
+  				 0 /*y*/, 0 /*nWidth*/, 0 /*nHeight*/, NULL /*hWndParent*/, NULL /*hMenu*/,
+  				NULL /*hInstance*/,  NULL /*lpParam*/);
+	DeleteDC(NULL);
+
+	return 0;
+}