convert: enable deterministic conversion progress bar for svn This produces slightly bad results when branches are in play, but overall I think it's probably worthwhile. We might be able to do better with branches somehow, but I haven't given it any thought.

convert: enable deterministic conversion progress bar for git

test-convert-git.t: add a test of convert progress bars for git We're about to enhance this support, so test the existing behavior so the improved behavior is obvious in the next patch.

convert: add support for deterministic progress bar on scanning phase This makes it possible to estimate how long the "scanning source" phase will take, if the specified source repo type supports a quick "how many changes" check.

test-convert-svn-move.t: remove stray '

manifest: move addlistdelta to module-level Again, there's no reason for this to be inside manifest.add, so we'll define it only once.

manifest: move checkforbidden to module-level There's no need for this function to be nested, so let's just define it once instead of every time manifest.add() gets called.