See bug 504116.
This is a trivial fix that doesn't come with any real backwards compatibility dangers. In fact, it improves safety of packages through replacing implicit dependency on private API of a medium-sized package by explicit dependency on small, dedicated package.
That said, 9 months (1.5yr in case of glibc) to apply the fix is definitely too long. Therefore, I'm setting a deadline on fixing the remaining bugs to 2014-12-27. If the bugs aren't fixed till that point, I will be committing simple 'sed' statements to replace the inherits.
Should be in the tree now for webapp-config-1.53-r1. If it needs to be applied to 1.52-r1, I can do that too.