revlog: rewrite several method docstrings
- methods: findmissing(), nodesbetween(), descendants(), ancestors()
- the goal is precise, concise, accurate, grammatical, understandable,
consistently formatted docstrings
#!/bin/sh
rm -rf a
hg init a
cd a
touch a
hg ci -Am0
hg mv a a1
hg ci -m1
hg co 0
hg mv a a2
hg up
hg ci -m2
touch a
hg ci -Am3
hg mv a b
hg ci -Am4 a
hg ci --debug --traceback -Am5 b
hg verify
hg export --git tip