Create a new patch file for each patch and close old handle

This stopped a few misbehaviours

test/manual/minimal.cpp

@@ -18,7 +18,7 @@ int main(int argc, char *argv[]) {
   while (modified != 0) {
 
     modified = minimal_lib::getNewValue(5);
-    printf("getNewValue(5): %d\n", modified);
+    printf("getNewValue: %d\n", modified);
     std::this_thread::sleep_for(std::chrono::seconds(1));
 
     printf("otherValue: %d\n", minimal_lib::otherValue++);