[RFC] README: Update Linux version requirement to 2.3.31.

[Bruno Jesus]

On Mon, May 8, 2017 at 3:59 PM,  <wylda at volny.cz> wrote:
> ...
>
> Anyway, configure suggest "do make". In that case compilation fails with:
>
> gcc -c -o v4l.o ../../../wine_git_src/dlls/qcap/v4l.c -I. -I../../../wine_git_src/dlls/qcap \
>   -I../../include -I../../../wine_git_src/include -D__WINESRC__ -D_REENTRANT -fPIC -Wall -pipe \
>   -fno-strict-aliasing -Wdeclaration-after-statement -Wstrict-prototypes -Wwrite-strings \
>   -Wpointer-arith -gdwarf-2 -fno-omit-frame-pointer
> ../../../wine_git_src/dlls/qcap/v4l.c: In function ‘qcap_driver_init’:
> ../../../wine_git_src/dlls/qcap/v4l.c:802: error: ‘O_CLOEXEC’ undeclared (first use in this function)
> ../../../wine_git_src/dlls/qcap/v4l.c:802: error: (Each undeclared identifier is reported only once
> ../../../wine_git_src/dlls/qcap/v4l.c:802: error: for each function it appears in.)
> make[1]: *** [v4l.o] Error 1
> make[1]: Leaving directory `/build/wine_git_bin_32/dlls/qcap'

This is bug https://bugs.winehq.org/show_bug.cgi?id=42478