Fix building of VMMaker image
Fix building of VMMaker image

CogCompatibility package attempts to load a Context class for compatibility with Pharo.
This is no more required in Squeak since latest trunk now have renamed ContextPart/MethodContext to Context.

timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,OpenSmalltalk/vm,OpenSmalltalk/vm,OpenSmalltalk/vm,OpenSmalltalk/vm