run-tests: set HGPLAIN=1 when bisecting
Otherwise a customized template may break the regex matching the bisect
output.
Differential Revision: https://phab.mercurial-scm.org/D949
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false