Slight reworking to make it more useful for debugging

Py_Initialize()/Py_Finalize() loop leaks.

- allow an optional 3rd argument which is the loop count.  -1 means
  infloop (the default).

- Add a setting of Py_NoSiteFlag=1, but leave it commented out by
  default.

Demo/embed/loop.c

@@ -6,21 +6,28 @@
 
 main(int argc, char **argv)
 {
+	int count = -1;
 	char *command;
 
-	if (argc != 2) {
-		fprintf(stderr, "usage: loop <python-command>\n");
+	if (argc < 2 || argc > 3) {
+		fprintf(stderr, "usage: loop <python-command> [count]\n");
 		exit(2);
 	}
-
 	command = argv[1];
 
+	if (argc == 3) {
+		count = atoi(argv[2]);
+	}
+
 	Py_SetProgramName(argv[0]);
 
-	while (1) {
+	/* uncomment this if you don't want to load site.py */
+	/* Py_NoSiteFlag = 1; */
+
+	while (count == -1 || --count >= 0 ) {
 		Py_Initialize();
 		PyRun_SimpleString(command);
 		Py_Finalize();
 	}
-	/*NOTREACHED*/
+	return 0;
 }