[tlbuild] io.lines luatex rebuild

[Akira Kakuto]

Hi Norbert,

>> Affected files are only luatex-core.c (24766 bytes) and luatex-core.lua
>> (5583 bytes) in Build/source/texk/web2c/luatexdir/lua.
>
> Mixed line endings are now in the file :-(
> local io_open             = io.open
> local io_popen            = io.popen
> -local io_line             = io.lines
> +local io_lines            = io.lines^M
>
> local fio_readline        = fio.readline
>
> etc. Not that it is important, but lua might get upset?

Actually, luatex-core.lua is never used.
Only luatex-core.c is important.
I'll check if luatex-core.c is OK or not.

Best,
Akira