revlog: rewrite several method docstrings
- methods: findmissing(), nodesbetween(), descendants(), ancestors()
- the goal is precise, concise, accurate, grammatical, understandable,
consistently formatted docstrings
#!/bin/sh
echo '[Section]' >> $HGRCPATH
echo 'KeY = Case Sensitive' >> $HGRCPATH
echo 'key = lower case' >> $HGRCPATH
hg showconfig Section