Generate the PatternGrammar pickle during "make install".
Fixes part of #3131.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8aa006a..28a99e7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -68,6 +68,11 @@
   file name rather than a ZipInfo instance, so files are extracted with
   mode 0600 rather than 000 under Unix.
 
+Build
+-----
+
+- Generate the PatternGrammar pickle during "make install".
+
 
 What's New in Python 2.6 beta 2?
 ================================