* added documentation patch regarding duplicate keys from Andrew Johnson
+1.79 22nd October 2001
+
+ * Added a "local $SIG{__DIE__}" inside the eval that checks for the presence
+ of XSLoader s suggested by Andrew Hryckowin.
+
+ * merged core patch 12277.
+
+ * Changed NEXTKEY to not initialise the input key. It isn't used anyway.