Add DevIL 1.7.8.

libs/DevIL-1.7.8/examples/cpp_wrapper_example/il_wrap.cpp

@@ -0,0 +1,23 @@
+#include <IL/devil_cpp_wrapper.hpp>
+
+#include <iostream>
+using namespace std;
+
+int main(int argc, char **argv)
+{
+	if (argc < 2) {
+		cout << "Please specify a filename." << endl;
+		return 1;
+	}
+
+	ilImage Image(argv[1]);
+
+	cout << Image.Width() << 'x' << Image.Height() << '@' << (ILuint)Image.Bpp() << endl;
+
+	ilEnable(IL_FILE_OVERWRITE);
+
+	Image.Save("test.tga");
+
+	return 0;
+}
+