comments: fix minor spelling issues found with spell checker

hooks: for python hooks, consistently use __name__ etc as name, not the repr There is no reason to expose unnecessary Python implementation details and memory locations, also not in debug mode. readablefunc was already creating a nice name - we move that functionality up and reuse it. We consider having a __call__ and being types.FunctionType sufficiently similar and unify these two to just using the existing check for __call__.

hooks: move logging of hook name to after we have found the hook We do not expect the finding process to take a significant amount of time - it is the execution time of the hook we care about.

rebase: show nice list instead of set repr for 'computed skipped revs' debug