Update copyright dates, to include 2015.  No functional change.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15577 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_sigframe/sigframe-ppc32-linux.c b/coregrind/m_sigframe/sigframe-ppc32-linux.c
index 881234a..2a496fe 100644
--- a/coregrind/m_sigframe/sigframe-ppc32-linux.c
+++ b/coregrind/m_sigframe/sigframe-ppc32-linux.c
@@ -8,9 +8,9 @@
    This file is part of Valgrind, a dynamic binary instrumentation
    framework.
 
-   Copyright (C) 2000-2013 Nicholas Nethercote
+   Copyright (C) 2000-2015 Nicholas Nethercote
       njn@valgrind.org
-   Copyright (C) 2004-2013 Paul Mackerras
+   Copyright (C) 2004-2015 Paul Mackerras
       paulus@samba.org
 
    This program is free software; you can redistribute it and/or