branches/zip: Add the ChangeLog entry for r2631.

ChangeLog

+2008-09-17	The InnoDB Team
+
+	* btr/btr0cur.c, data/data0data.c, include/page0zip.h,
+	include/page0zip.ic, page/page0zip.c,
+	mysql-test/innodb_bug36172.test:
+	Prevent infinite B-tree page splits in compressed tables by
+	ensuring that there will always be enough space for two node
+	pointer records in an empty B-tree page.  Also, require that at
+	least one data record will fit in an empty compressed page.  This
+	will reduce the maximum size of records in compressed tables.
+	This was reported as Mantis issue #73.
+
 2008-09-09	The InnoDB Team
 
 	* mysql-test/innodb.result: