tools/valgrind/valgrind.sh: add script file to launch valgrind with all available suppression files

tools/valgrind/valgrind.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+SUPPRESSIONS=$(for f in $(dirname $0)/*.suppr ; do echo "--suppressions=$f" ; done)
+valgrind $SUPPRESSIONS --leak-check=full --show-leak-kinds=all $*