run-tests: don't count test as succeeded if it failed regressed around ec4ae5727f07

changegroup: do not count closed new heads (issue2697) If a closed head gets pulled, we currently see (example): $ hg pull pulling from $TESTTMP/repo2 searching for changes adding changesets adding manifests adding file changes added 2 changesets with 1 changes to 1 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) A subsequent 'hg heads' doesn't show that head because it is closed. This patch improves the UI response texts for that same use case to: $ hg pull pulling from $TESTTMP/repo2 searching for changes adding changesets adding manifests adding file changes added 2 changesets with 1 changes to 1 files (run 'hg update' to get a working copy) That is, the part "(+1 heads)" is not shown in that case any longer.

merge with crew

shrink-revlog: defend against null first parents

test-contrib: add a test for shrink-revlog We only verify the extension runs and that verify passes at the end as constructing a test repository that would result in a shrink would be nontrivial.

test-simplemerge-cmd.t: move all tests into test-contrib.t

Move test-dumprevlog to test-contrib in anticipation of more contrib tests

shrink-revlog: use a bundler object (see d69c9510d648)