Prevent name pollution by making lots of internal functions static.
diff --git a/Python/future.c b/Python/future.c
index a0cfeac..2f593ac 100644
--- a/Python/future.c
+++ b/Python/future.c
@@ -46,7 +46,7 @@
 	return 1;
 }
 
-int
+static int
 future_parse(PyFutureFeatures *ff, mod_ty mod, const char *filename)
 {
 	int i, found_docstring = 0, done = 0, prev_line = 0;