Update reference to new master of wdef_tools

diff --git a/wdef_tools b/wdef_tools
index ffdd0f84516bd39601220e636cb0b119620452e4..ffe706065e244158de3f31b7627bcd0f0b86fb54 160000 (submodule)
--- a/wdef_tools
+++ b/wdef_tools
@@ -1 +1 @@
-Subproject commit ffdd0f84516bd39601220e636cb0b119620452e4
+Subproject commit ffe706065e244158de3f31b7627bcd0f0b86fb54