Missing function in context.module, still called in context_contrib.module

The function context_set_by_condition() is no more present in context.module but it's still called four times in context_contrib.module.
The function is nowhere to be found in the whole context tree.

I tried to copy/paste it from previous versions of context and it seems to work well. I didn't performed deep testing yet but I will. If someone wants to try, attached is a custom module that implement the function if needed (function_exists tested).

Please, fix either context or context_contrib ASAP since it's stable now!