Update bits/mman.h constants and tst-mman-consts.py for Linux 5.3

[Andreas Schwab]

On Sep 24 2019, Joseph Myers <joseph@codesourcery.com> wrote:

> 	* sysdeps/unix/sysv/linux/powerpc/bits/mman.h [__USE_MISC]
> 	(MAP_SYNC): New macro.
> 	* sysdeps/unix/sysv/linux/sparc/bits/mman.h [__USE_MISC]
> 	(MAP_SYNC): Likewise.
> 	* sysdeps/unix/sysv/linux/tst-mman-consts.py (main): Update Linux
> 	kernel version number to 5.3.

Ok.

Andreas.

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Andreas Schwab, SUSE Labs, schwab@suse.de
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