Instead of importing graminit.h whenever one of the three grammar 'root'
symbols is needed, define these in Python.h with a Py_ prefix.
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 8bb7565..138bc3f 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -36,7 +36,6 @@
 #include "grammar.h"
 #include "node.h"
 #include "parsetok.h"
-#include "graminit.h"
 #undef argument /* Avoid conflict on Mac */
 #include "errcode.h"
 #include "compile.h"
@@ -237,7 +236,7 @@
 	}
 	Py_BEGIN_ALLOW_THREADS
 	n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar,
-			       single_input, ps1, ps2, &err);
+			       Py_single_input, ps1, ps2, &err);
 	Py_END_ALLOW_THREADS
 	Py_XDECREF(v);
 	Py_XDECREF(w);
@@ -296,7 +295,7 @@
 			Py_OptimizeFlag = 1;
 		v = run_pyc_file(fp, filename, d, d);
 	} else {
-		v = PyRun_File(fp, filename, file_input, d, d);
+		v = PyRun_File(fp, filename, Py_file_input, d, d);
 	}
 	if (v == NULL) {
 		PyErr_Print();
@@ -316,7 +315,7 @@
 	if (m == NULL)
 		return -1;
 	d = PyModule_GetDict(m);
-	v = PyRun_String(command, file_input, d, d);
+	v = PyRun_String(command, Py_file_input, d, d);
 	if (v == NULL) {
 		PyErr_Print();
 		return -1;