(puremodule.c): New module which exports the Purify and Quantify C API

to Python.  Minimal documentation is included in comments at the top
of the file, and in the Misc/PURIFY.README file.  Note that this
module must be statically linked since Pure doesn't provide shared
stubs libraries.

(Setup.in): Added commented template for pure module

(syslogmodule.c): ins() function wasn't declared static.

Modules/Setup.in

@@ -101,6 +101,13 @@ signal signalmodule.c		# signal(2)
 
 #thread threadmodule.c
 
+# Pure module.  Cannot be linked dynamically.
+# -DWITH_QUANTIFY, -DWITH_PURIFY, or -DWITH_ALL_PURE
+#WHICH_PURE_PRODUCTS=-DWITH_ALL_PURE
+#PURE_INCLS=-I/usr/local/include
+#PURE_STUBLIBS=-L/usr/local/lib -lpurify_stubs -lquantify_stubs
+#pure puremodule.c $(WHICH_PURE_PRODUCTS) $(PURE_INCLS) $(PURE_STUBLIBS)
+
 # Uncommenting the following line tells makesetup that all following
 # modules are to be built as shared libraries (see above for more
 # detail):

Modules/syslogmodule.c

@@ -155,14 +155,17 @@ static PyMethodDef syslog_methods[] = {
 
 /* Initialization function for the module */
 
-void ins(d, s, x)
+static void
+ins(d, s, x)
 	PyObject *d;
 	char *s;
 	long x;
 {
-	PyObject *xl = PyInt_FromLong(x);
-	PyDict_SetItemString(d, s, xl);
-	Py_XDECREF(xl);
+	PyObject *v = PyInt_FromLong(x);
+	if (v) {
+		PyDict_SetItemString(d, s, v);
+		Py_DECREF(v);
+	}
 }