help: indicate how to run downgrade a repository using persistent nodemap
We have a couple of report of people needing this. I am not fan of pointing
people to a debug command, but we don't have much better to offer right now
Differential Revision: https://phab.mercurial-scm.org/D11214
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false
IncludeCategories:
- Regex: '^<'
Priority: 1
- Regex: '^"'
Priority: 2