Re: [PATCH v2 2/2] t0027: Support NATIVE_CRLF

> Without this patch, t0027 expects the native end-of-lines to be a single
> line feed character. On Windows, however, we set it to a carriage return
> character followed by a line feed character. Thus, we have to modify
> t0027 to expect different warnings depending on the end-of-line markers.
>
> Adjust the check of the warnings and use these macros:
>   WILC:  Warn if LF becomes CRLF
>   WICL:  Warn if CRLF becomes LF
>   WAMIX: Mixed line endings: either CRLF->LF or LF->CRLF
>
> Improve the information given by check_warning():
> Use test_cmp to show which warning is missing (or should'n t be there)