Please include ada-hurd.diff upstream (try2)

[Samuel Thibault]

Hello Svante,

The gcc-6 build failed. I see that one of the change is:

-   --  From: /usr/include/unistd.h __getpagesize or getpagesize??
-   function Get_Page_Size return int;
+   --  From: /usr/include/i386-gnu/bits/shm.h __getpagesize or getpagesize??
+   function Get_Page_Size return size_t;
+   function Get_Page_Size return Address;

Why using size_t and Address?  Other OSes use int, and the prototype for
getpagesize is returning int.

Also, don't use the __ versions of the glibc functions, they are
internal aliases, the API is without __.

Samuel