[Pharo-project] [update 3.0] #30081

[update 3.0] #30081 30081 ----- 10462 Add SpecModel for NewList https://pharo.fogbugz.com/f/cases/10462 10468 More Decompiler related cleanups https://pharo.fogbugz.com/f/cases/10468 Diff information: http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Tools-MarcusDenker.1096 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Spec-Widgets-MarcusDenker.132 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/Spec-Tools-MarcusDenker.99 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/KernelTests-MarcusDenker.499 http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/CompilerTests-MarcusDenker.14... http://smalltalkhub.com/#!/~Pharo/Pharo30/diff/AST-Interpreter-Extension-Mar...