hg pull: more query fixes...
hg pull: more query fixes
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hg pull: more query fixes
Pull was getting confused by single-element branches because it had
seen the top end already.
Also, the previous change to do seenbranch on the base of the branch
was bogus.
Minor cleanup and a bit more diagnostics in the branch-narrowing code.
manifest hash:
71d4dced9f74bef43d3a54d086dccd0a96d68e26
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