Duplicate tests that are run twice as both C and C++ tests to fix parallel make: overload_extend

Examples/test-suite/scilab/overload_extend_c_runme.sci

@@ -0,0 +1,13 @@
+exec("swigtest.start", -1);
+
+//try
+//    x = new_Foo();
+//catch
+//    swigtesterror();
+//end
+//if Foo_test(x) <> 0 then swigtesterror(); end
+//if Foo_test(x, 1) <> 1 then swigtesterror(); end
+//if Foo_test(x, 2, 3) <> 5 then swigtesterror(); end
+//if Foo_test(x, "Hello, swig!") <> 2 then swigtesterror(); end
+
+exec("swigtest.quit", -1);