[Pharo-project] [update 2.0] #20011

20011 ----- introducing: -RPackage -Spec -Keymapping -Refactoring Engine -AST -Nautilus - Issue 5665: bug on new ecompletion/ocompletion http://code.google.com/p/pharo/issues/detail?id=5665 - Issue 5671: Polymorph fixes http://code.google.com/p/pharo/issues/detail?id=5671