NEW: Note Removing support for big endian PPC, XL compiler older than 13.1

Signed-off-by: Joshua Hursey <[email protected]>

Author: jjhursey

NEWS

@@ -14,7 +14,7 @@ Copyright (c) 2006      Sun Microsystems, Inc.  All rights reserved.
                         Use is subject to license terms.
 Copyright (c) 2006-2017 Los Alamos National Security, LLC.  All rights
                         reserved.
-Copyright (c) 2010-2012 IBM Corporation.  All rights reserved.
+Copyright (c) 2010-2017 IBM Corporation.  All rights reserved.
 Copyright (c) 2012      Oak Ridge National Labs.  All rights reserved.
 Copyright (c) 2012-2017 Sandia National Laboratories.  All rights reserved.
 Copyright (c) 2012      University of Houston. All rights reserved.
@@ -72,6 +72,8 @@ Removed legacy support:
   Open MPI BTL components for supported networks. Please see README for the currently
   available options.
 - Remove IB XRC support from the OpenIB BTL due to lack of support.
+- Remove support for big endian PowerPC.
+- Remove support for XL compilers older than v13.1
 
 Known issues (to be addressed in v3.0.1):