Mass ANSIfication.

Work around intrcheck.c's desire to pass 'PyErr_CheckSignals' to
'Py_AddPendingCall' by providing a (static) wrapper function that has the
right number of arguments.
diff --git a/Parser/firstsets.c b/Parser/firstsets.c
index b27ed2e..295f67d 100644
--- a/Parser/firstsets.c
+++ b/Parser/firstsets.c
@@ -20,8 +20,7 @@
 static void calcfirstset(grammar *, dfa *);
 
 void
-addfirstsets(g)
-	grammar *g;
+addfirstsets(grammar *g)
 {
 	int i;
 	dfa *d;
@@ -35,9 +34,7 @@
 }
 
 static void
-calcfirstset(g, d)
-	grammar *g;
-	dfa *d;
+calcfirstset(grammar *g, dfa *d)
 {
 	int i, j;
 	state *s;