Merging the various tweaks for MacPython-OS9 2.3a1 back into the trunk.
diff --git a/Mac/Distributions/src.exclude b/Mac/Distributions/src.exclude
index aa188a8..e63e55e 100644
--- a/Mac/Distributions/src.exclude
+++ b/Mac/Distributions/src.exclude
@@ -8,6 +8,7 @@
 *.in
 *.lib
 *.pyc
+*.pyo
 *.slb
 *.xMAP
 *.xSYM
@@ -19,4 +20,3 @@
 Makefile.pre.in
 PyIDE-src
 [(]*[)]
-*.pyo