Started on GUSI2 and threading support.
diff --git a/Mac/Python/macgetpath.c b/Mac/Python/macgetpath.c
index 02f9b48..d1c60a0 100644
--- a/Mac/Python/macgetpath.c
+++ b/Mac/Python/macgetpath.c
@@ -54,7 +54,7 @@
 #include <TextUtils.h>
 #include <Dialogs.h>
 
-#ifdef USE_GUSI
+#ifdef USE_GUSI1
 #include <GUSI.h>
 #endif
 
@@ -444,7 +444,7 @@
 	UseResFile(oldrh);
 }
 
-#ifdef USE_GUSI
+#ifdef USE_GUSI1
 void
 PyMac_SetGUSIOptions()
 {