Fixes python memory crashing. http://bugs.debian.org/468994
test case:
$ python -c "import Numeric ; import RNG ; a = RNG.NormalDistribution(0,1) ; del a"

=== modified file 'Packages/RNG/Src/RNGmodule.c'
--- Packages/RNG/Src/RNGmodule.c	2008-11-09 21:08:36 +0000
+++ Packages/RNG/Src/RNGmodule.c	2008-11-09 21:08:39 +0000
@@ -79,7 +79,7 @@
 {
 	distributionobject *self;
 
-	self = PyObject_NEW(distributionobject, &distributiontype);
+	self = PyObject_New(distributionobject, &distributiontype);
 	if (self == NULL)
 		return NULL;
 	self->density = NULL;
@@ -92,7 +92,7 @@
 dist_dealloc(distributionobject *self)
 {
 	Py_XDECREF(self->parameters);
-	PyMem_DEL(self);
+	PyObject_Del(self);
 }
 
 
@@ -494,7 +494,7 @@
 {
 	rngobject *self;
 
-	self = PyObject_NEW(rngobject, &rngtype);
+	self = PyObject_New(rngobject, &rngtype);
 	if (self == NULL)
 		return NULL;
 	self->distribution = distribution;
@@ -522,7 +522,7 @@
 rng_dealloc(rngobject *self)
 {
 	Py_DECREF(self->distribution);
-	PyMem_DEL(self);
+	PyObject_Del(self);
 }