inotify: inotify.server.walkrepodirs() simplify walking
Do not 'yield tuple, boolean' to filter later on the boolean.
Test the boolean first, and yield tuple only if needed.
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Committed revision 1.
% initial roundtrip
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% second roundtrip should do nothing
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% new hg rev
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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0 b
% svn back to hg should do nothing
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% hg back to svn should do nothing
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