* bltinmodule.c: added built-in function cmp(a, b)

* flmodule.c: added {do,check}_only_forms to fl's list of functions;
  and don't print a message when an unknown object is returned.

* pythonrun.c: catch SIGHUP and SIGTERM to do essential cleanup.

* Made jpegmodule.c smaller by using getargs() and mkvalue() consistently.

* Increased parser stack size to 500 in parser.h.

* Implemented custom allocation of stack frames to frameobject.c and
  added dynamic stack overflow checks (value stack only) to ceval.c.
  (There seems to be a bug left: sometimes stack traces don't make sense.)

Python/bltinmodule.c

@@ -77,6 +77,17 @@ builtin_chr(self, args)
 	return newsizedstringobject(s, 1);
 }
 
+static object *
+builtin_cmp(self, args)
+	object *self;
+	object *args;
+{
+	object *a, *b;
+	if (!getargs(args, "(OO)", &a, &b))
+		return NULL;
+	return newintobject((long)cmpobject(a, b));
+}
+
 static object *
 builtin_coerce(self, args)
 	object *self;
@@ -608,6 +619,7 @@ static struct methodlist builtin_methods[] = {
 	{"abs",		builtin_abs},
 	{"apply",	builtin_apply},
 	{"chr",		builtin_chr},
+	{"cmp",		builtin_cmp},
 	{"coerce",	builtin_coerce},
 	{"dir",		builtin_dir},
 	{"divmod",	builtin_divmod},