Python 2.0 is not supposed to use string exceptions in the standard library

& extensions, so create exceptions in extension modules using the
PyErr_NewException() API.

Modules/_cursesmodule.c

@@ -2329,7 +2329,7 @@ init_curses()
 	ModDict = d; /* For PyCurses_InitScr */
 
 	/* For exception curses.error */
-	PyCursesError = PyString_FromString("_curses.error");
+	PyCursesError = PyErr_NewException("_curses.error", NULL, NULL);
 	PyDict_SetItemString(d, "error", PyCursesError);
 
 	/* Make the version available */

Modules/almodule.c

@@ -2195,7 +2195,7 @@ inital()
 
 	/* Add some symbolic constants to the module */
 	d = PyModule_GetDict(m);
-	ErrorObject = PyString_FromString("al.error");
+	ErrorObject = PyErr_NewException("al.error", NULL, NULL);
 	PyDict_SetItemString(d, "error", ErrorObject);
 
 	/* XXXX Add constants here */

Modules/pcremodule.c

@@ -654,7 +654,7 @@ initpcre()
 
 	/* Add some symbolic constants to the module */
 	d = PyModule_GetDict(m);
-	ErrorObject = PyString_FromString("pcre.error");
+	ErrorObject = PyErr_NewException("pcre.error", NULL, NULL);
 	PyDict_SetItemString(d, "error", ErrorObject);
 
 	/* Insert the flags */