patchPush the NATIVE_CRLF Makefile variable to C and added a test for native.

> Commit 95f31e9a correctly points out that the NATIVE_CRLF setting is
> incorrectly set on Mingw git. However, the Makefile variable is not
> propagated to the C preprocessor and results in no change. This patch
> pushes the definition to the C code and adds a test to validate that
> when core.eol as native is crlf, we actually normalize text files to this
> line ending convention when core.autocrlf is false.
>
> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
> Signed-off-by: Stepan Kasal <kasal@ucw.cz>
> Signed-off-by: Torsten Bögershausen <tboegi@web.de>
> ---
>
> (This is from MINGW, and some part of my brain thougth that this was send
> upstream, but it wasn't. Only 95f31e9a is in git.git)
>
>  Makefile              |  3 +++
>  t/t0026-eol-config.sh | 18 ++++++++++++++++++
>  2 files changed, 21 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 63a210d..13311d2 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1481,6 +1481,9 @@ ifdef NO_REGEX
>         COMPAT_CFLAGS += -Icompat/regex
>         COMPAT_OBJS += compat/regex/regex.o
>  endif
> +ifdef NATIVE_CRLF
> +       BASIC_CFLAGS += -DNATIVE_CRLF
> +endif
>
>  ifdef USE_NED_ALLOCATOR
>         COMPAT_CFLAGS += -Icompat/nedmalloc
> diff --git a/t/t0026-eol-config.sh b/t/t0026-eol-config.sh
> index 4807b0f..43a580a 100755
> --- a/t/t0026-eol-config.sh
> +++ b/t/t0026-eol-config.sh
> @@ -80,4 +80,22 @@ test_expect_success 'autocrlf=true overrides unset eol' '
>         test -z "$onediff" && test -z "$twodiff"
>  '
>
> +test_expect_success NATIVE_CRLF 'eol native is crlf' '
> +
> +       rm -rf native_eol && mkdir native_eol &&
> +       ( cd native_eol &&
> +       printf "*.txt text\n" > .gitattributes
> +       printf "one\r\ntwo\r\nthree\r\n" > filedos.txt
> +       printf "one\ntwo\nthree\n" > fileunix.txt

> +       git init &&
> +       git config core.autocrlf false &&
> +       git config core.eol native &&
> +       git add filedos.txt fileunix.txt &&
> +       git commit -m "first" &&
> +       rm file*.txt &&
> +       git reset --hard HEAD &&
> +       has_cr filedos.txt && has_cr fileunix.txt
> +       )
> +'
> +
>  test_done
> --
> 2.1.0.rc2.210.g636bceb

> Commit 95f31e9a correctly points out that the NATIVE_CRLF setting is
> incorrectly set on Mingw git. However, the Makefile variable is not
> propagated to the C preprocessor and results in no change. This patch
> pushes the definition to the C code and adds a test to validate that
> when core.eol as native is crlf, we actually normalize text files to this
> line ending convention when core.autocrlf is false.
>
> Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
> Signed-off-by: Stepan Kasal <kasal@ucw.cz>
> Signed-off-by: Torsten Bögershausen <tboegi@web.de>
> ---
>
> (This is from MINGW, and some part of my brain thougth that this was send
> upstream, but it wasn't. Only 95f31e9a is in git.git)
>
>  Makefile              |  3 +++
>  t/t0026-eol-config.sh | 18 ++++++++++++++++++
>  2 files changed, 21 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 63a210d..13311d2 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1481,6 +1481,9 @@ ifdef NO_REGEX
>  	COMPAT_CFLAGS += -Icompat/regex
>  	COMPAT_OBJS += compat/regex/regex.o
>  endif
> +ifdef NATIVE_CRLF
> +	BASIC_CFLAGS += -DNATIVE_CRLF
> +endif
>  
>  ifdef USE_NED_ALLOCATOR
>         COMPAT_CFLAGS += -Icompat/nedmalloc
> diff --git a/t/t0026-eol-config.sh b/t/t0026-eol-config.sh
> index 4807b0f..43a580a 100755
> --- a/t/t0026-eol-config.sh
> +++ b/t/t0026-eol-config.sh
> @@ -80,4 +80,22 @@ test_expect_success 'autocrlf=true overrides unset eol' '
>  	test -z "$onediff" && test -z "$twodiff"
>  '
>  
> +test_expect_success NATIVE_CRLF 'eol native is crlf' '

> +
> +	rm -rf native_eol && mkdir native_eol &&
> +	( cd native_eol &&
> +	printf "*.txt text\n" > .gitattributes
> +	printf "one\r\ntwo\r\nthree\r\n" > filedos.txt
> +	printf "one\ntwo\nthree\n" > fileunix.txt

> +	git init &&
> +	git config core.autocrlf false &&
> +	git config core.eol native &&
> +	git add filedos.txt fileunix.txt &&
> +	git commit -m "first" &&
> +	rm file*.txt &&
> +	git reset --hard HEAD &&
> +	has_cr filedos.txt && has_cr fileunix.txt
> +	)
> +'
> +
>  test_done