Resync the trunk NEWS file with the 1.2.7 changes.

This commit was SVN r18268.

NEWS

@@ -95,6 +95,8 @@ Trunk (not on release branches yet)
 1.2.7 (might never be released)
 -----
 
+- Removed an unused function prototype that caused warnings on
+  some systems (e.g., OS X).  See ticket #1274.
 - Fix a deadlock in inter-communicator scatter/gather operations.
   Thanks to Martin Audet for the bug report.  See ticket #1268.