[RFC PATCH] Kill some duplication between 64-bit linux arches

[Roland McGrath]

> This patch is not valid under current assumptions.  INLINE_SYSCALL is a
> Linux-ism.  It cannot be used in sysdeps/wordsize-64 which is a generic
> directory.  The problem is that what is a syscall on Linux need not
> necessarily by a syscall equivalent on other OSes.  Hurd, for instance,
> has read() as a normal function in libc IIRC.

Correct.

> Maybe creating sysdeps/unix/sysv/linux/wordsize-64, moving the new files
> there, and requiring that directory for all 64-bit archs on Linux will work.

If these are useful e.g. for the GNU/*BSD ports, then there could be a
purpose-specific directory such as sysdeps/unix/inline-syscall/wordsize-64.