Updated for (optional) use of MSL libraries
diff --git a/Mac/mwerks/mwerks_small_config.h b/Mac/mwerks/mwerks_small_config.h
index 26378ee..28555f4 100644
--- a/Mac/mwerks/mwerks_small_config.h
+++ b/Mac/mwerks/mwerks_small_config.h
@@ -6,6 +6,7 @@
 */
 
 #define USE_GUSI		/* Stdio implemented with GUSI */
+#define USE_MSL			/* Use Mw Standard Library (as opposed to Plaugher C libraries) */
 #define USE_TOOLBOX		/* Include toolbox modules in core Python */
 #define USE_QT			/* Include quicktime modules in core Python */
 /* #define USE_WASTE		/* Include waste module in core Python */
@@ -19,8 +20,12 @@
 /* #define USE_MAC_SHARED_LIBRARY	/* Enable code to add shared-library resources */
 /* #define USE_MAC_APPLET_SUPPORT	/* Enable code to run a PYC resource */
 /* #define USE_MAC_DYNAMIC_LOADING		/* Enable dynamically loaded modules */
-/* #define USE_MALLOC_DEBUG			/* Enable range checking and other malloc debugging */
+#define USE_MALLOC_DEBUG			/* Enable range checking and other malloc debugging */
 /* #define USE_GDBM		/* Include the gdbm module */
 #ifdef __powerc
 #define USE_CACHE_ALIGNED 8		/* Align on 32-byte boundaries for 604 */
 #endif
+#ifdef USE_MSL
+#define MSL_USE_PRECOMPILED_HEADERS 0	/* Don't use precomp headers: we include our own */
+#include <ansi_prefix.mac.h>
+#endif