Updates to the OS X installer for 3.5.0b3:
- update installer ReadMe file
- suppress installer per-file byte-compilation messages to system log
- speed up installer byte-compilation
- isolate ensurepip install from user site-packages
diff --git a/Mac/BuildScript/scripts/postflight.ensurepip b/Mac/BuildScript/scripts/postflight.ensurepip
index bf893d1..3074fa3 100755
--- a/Mac/BuildScript/scripts/postflight.ensurepip
+++ b/Mac/BuildScript/scripts/postflight.ensurepip
@@ -10,15 +10,15 @@
 
 umask 022
 
-"${FWK}/bin/python${PYVER}" -m ensurepip --upgrade
+"${FWK}/bin/python${PYVER}" -E -s -m ensurepip --upgrade
 
-"${FWK}/bin/python${PYVER}" -Wi \
-    "${FWK}/lib/python${PYVER}/compileall.py" \
+"${FWK}/bin/python${PYVER}" -E -s -Wi \
+    "${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
     -f -x badsyntax \
     "${FWK}/lib/python${PYVER}/site-packages"
 
-"${FWK}/bin/python${PYVER}" -Wi -O \
-    "${FWK}/lib/python${PYVER}/compileall.py" \
+"${FWK}/bin/python${PYVER}" -E -s -Wi -O \
+    "${FWK}/lib/python${PYVER}/compileall.py" -q -j0 \
     -f -x badsyntax \
     "${FWK}/lib/python${PYVER}/site-packages"