for windows dynamic override, add standard api override and stop patching new/delete (for now)

test/main-override.cpp

@@ -12,6 +12,14 @@ void free_p() {
   return;
 }
 
+class Test {
+private:
+  int i;
+public:
+  Test(int x) { i = x; }
+  ~Test() { }
+};
+
 int main() {
   mi_stats_reset();  
   atexit(free_p);
@@ -26,8 +34,10 @@ int main() {
   free(p1);
   free(p2);
   free(s);
+  Test* t = new Test(42);
+  delete t;
   mi_collect(true);
-  mi_stats_print(NULL);
+  // mi_stats_print(NULL);  // MIMALLOC_VERBOSE env is set to 2 
   return 0;
 }