tools/Makefile.am: add cppcheck/suppressions.txt in distrib file

tools/Makefile.am

@@ -1,7 +1,7 @@
 # StarPU --- Runtime system for heterogeneous multicore architectures.
 #
 # Copyright (C) 2009-2016  Université de Bordeaux
-# Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016  CNRS
+# Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017  CNRS
 # Copyright (C) 2016  Inria
 #
 # StarPU is free software; you can redistribute it and/or modify
@@ -154,7 +154,8 @@ EXTRA_DIST =				\
 	msvc/starpu_exec.bat		\
 	msvc/starpu_var.bat		\
 	msvc/starpu.sln			\
-	msvc/starpu/starpu.vcxproj
+	msvc/starpu/starpu.vcxproj	\
+	cppcheck/suppressions.txt
 
 CLEANFILES = *.gcno *.gcda *.linkinfo starpu_idle_microsec.log figure/* mlr_*