Temporarily kill widlparser, pending reintegration as a subtree rather than submodule.
Squashed 'lib/widlparser/' content from commit 41fc5d7

git-subtree-dir: lib/widlparser
git-subtree-split: 41fc5d7fbd16f617cde64dc8d86642b0b642aee8
Merge commit '10ddbc61b997f0ab6ed86c87edfa6d9ae5bc6b44' as 'lib/widlparser'