patch: unify check_binary and binary flags
Follows up 079b27b5a869. If opts.text=True, check_binary is ignored, so we
can just pass the binary flag to unidiff().
perfunidiff now takes any inputs as text files, which I think is a desired
behavior.
BasedOnStyle: LLVM
IndentWidth: 8
UseTab: ForIndentation
BreakBeforeBraces: Linux
AllowShortIfStatementsOnASingleLine: false
IndentCaseLabels: false
AllowShortBlocksOnASingleLine: false
AllowShortFunctionsOnASingleLine: false