.clang-format

rust: look up HgRevlogIndex_GetParents() from symbol table

And removes the unused index_get_parents_checked() function.

I expect the Index struct will be turned into a pyobject type, though I
haven't written any PoC-level patches yet.

BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false
IncludeCategories:
  - Regex:           '^<'
    Priority:        1
  - Regex:           '^"'
    Priority:        2