[PATCH] Final NEWS and README updates.

[Roland McGrath]

>  The GNU C Library implements much of the POSIX.1 functionality in the
> -GNU/Hurd system, using configurations i[34567]86-*-gnu.
> +GNU/Hurd system, using configurations i[34567]86-*-gnu. The current
> +GNU/Hurd support requires out-of-tree patches that will eventually be
> +incorporated into an official GNU C Library relase.

Two space between sentences.  Typo: "release".