add a simple nested buffering scheme to ui

make manifest friendlier switch to using context code ..which uses first parent by default show file hashes only with debug switch show permissions with verbose fix up tests

Add missing test output

Fix test permission

merge: handle directory renames commit: handle new copy dirstate case correctly findcopies: keep a map of all copies found for directory logic add dirs filter check for merge:followdirs config option generate a directory move map find files that match directory move map manifestmerge: add directory rename cases applyupdates: skip actions with None file add "d" action recordupdates: add "d" action add simple directory rename test

merge: pull findcopies helpers inside, refactor checkpair to checkcopies