serve: don't send any content headers with 304 responses Fixes HTTP protocol violation introduced in cf5c76017e11. 'hg serve' would show a stacktrace when loading pages that not had been modified. There was test coverage for this, but the wrong response headers wasn't shown and thus not detected.

tests: fix doctest stability over Python versions pprint ain't pretty in Python 2.4: Changed in version 2.5: Dictionaries are sorted by key before the display is computed; before 2.5, a dictionary was sorted only if its display required more than one line, although that wasn’t documented. Fixes issue introduced in 404feac78b8a.

tests: stabilize doctest output Avoid dependencies to dict iteration order.

tests: make test-hook.t output more stable

convert: make toposort order stable when multiple orderings are possible The output of some tests are changed. Not necessarily to the better, just other valid permutations.

convert: report cvsps branchpoints sorted

convert: process subversion branch in a sorted order

convert: process missing branches in sorted order

convert: process splicemap in sorted order

mq: stabilize update after strip of parent revision Strip will (if it updates) update to the parent of revs[0], where revs are the roots of the tree that is stripped. When revs was list(set) it was thus undefined which root parent it would update to. With sorted(set) it is at least stable what it updates to. (But it is very possible that another more useful and predictable behaviour could be defined ... such as updating to the tip-most surviving wd ancestor.)