Prepare for the possibility of a 2.5.1 release.

* NEWS (2.5.1): New heading.

ChangeLog

@@ -1,3 +1,8 @@
+2011-05-29  Joel E. Denny  <[email protected]>
+
+	Prepare for the possibility of a 2.5.1 release.
+	* NEWS (2.5.1): New heading.
+
 2011-05-14  Joel E. Denny  <[email protected]>
 
 	Version 2.5.

NEWS

@@ -1,6 +1,8 @@
 Bison News
 ----------
 
+* Changes in version 2.5.1 (????-??-??):
+
 * Changes in version 2.5 (2011-05-14):
 
 ** Grammar symbol names can now contain non-initial dashes: