[OCaml] Rename example_prog.ml to runme.ml in the OCaml examples

Name the output executable "runme" in the examples.
Replace use of "foolib" in the string_from_ptr example.
Fix a warning in the std_vector example.
Add strings_test to Examples/ocaml/check.list.
Disable two tests that were causing the OCaml test suite to fail.

Examples/ocaml/std_vector/runme.ml

@@ -14,7 +14,7 @@ let print_DoubleVector v =
       (fun v i -> 
 	 print_float ((v '[i to int]) as float) ;
 	 print_string " ") ;
-    print_endline 
+    print_endline ""
   end
 
 (* Call average with a Ocaml array... *)
@@ -27,7 +27,7 @@ let rec fill_dv v x =
       fill_dv v (x *. x)
     end
 let _ = fill_dv v 0.999
-let _ = print_DoubleVector v ; print_endline ""
+let _ = print_DoubleVector v
 let u = new_IntVector '()
 let _ = for i = 1 to 4 do
   u -> push_back ((i to int))