[Pharo-dev] Spec independent on Morphic

Hi, as one part of preparations on switching to Bloc I tried to cut the Gordian knot of Spec and Morphic dependencies. I prepared a pull request that makes basic Spec packages, Text-Core, MenuRegistration and basic Keybinding packages independent on Morphic. We will probably need to solve some details but the most important parts are solved. Please review: https://github.com/pharo-project/pharo/pull/383 prebuilt image: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20... Cheers, -- Pavel