hurd: Fix p{read,write}{,v64}v2.c build

* misc/preadv2.c: Include <errno.h>.
	* misc/preadv64v2.c: Include <errno.h>.
	* misc/pwritev2.c: Include <errno.h>.
	* misc/pwritev64v2.c: Include <errno.h>.
	* sysdeps/posix/preadv2.c: Include <errno.h>.
	* sysdeps/posix/preadv64v2.c: Include <errno.h>.
	Fix <unistd.h> inclusion.
	* sysdeps/posix/pwritev2.c: Include <errno.h>.
	* sysdeps/posix/pwritev64v2.c: Include <errno.h>.

ChangeLog

@@ -9,6 +9,15 @@
 	* sysdeps/posix/preadv64v2.c: Use off64_t instead of OFF_T.
 	* sysdeps/posix/pwritev2.c: Use off_t instead of OFF_T.
 	* sysdeps/posix/pwritev64v2.c: Use off64_t instead of OFF_T.
+	* misc/preadv2.c: Include <errno.h>.
+	* misc/preadv64v2.c: Include <errno.h>.
+	* misc/pwritev2.c: Include <errno.h>.
+	* misc/pwritev64v2.c: Include <errno.h>.
+	* sysdeps/posix/preadv2.c: Include <errno.h>.
+	* sysdeps/posix/preadv64v2.c: Include <errno.h>.
+	Fix <unistd.h> inclusion.
+	* sysdeps/posix/pwritev2.c: Include <errno.h>.
+	* sysdeps/posix/pwritev64v2.c: Include <errno.h>.
 
 2017-09-01  Joseph Myers  <joseph@codesourcery.com>
 

misc/preadv2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <sys/uio.h>
 
 /* Same as preadv but with an additional flags argument.  */

misc/preadv64v2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <sys/uio.h>
 
 /* Same as preadv64 but with an addional flag argument.  */

misc/pwritev2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <sys/uio.h>
 
 /* Same as pwritev but with an additional flags argument.  */

misc/pwritev64v2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <sys/uio.h>
 
 /* Same as preadv64 but with an addional flag argument.  */

sysdeps/posix/preadv2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <unistd.h>
 #include <sys/uio.h>
 

sysdeps/posix/preadv64v2.c

@@ -16,7 +16,8 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <unistd.>
+#include <errno.h>
+#include <unistd.h>
 #include <sys/uio.h>
 
 ssize_t

sysdeps/posix/pwritev2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <unistd.h>
 #include <sys/uio.h>
 

sysdeps/posix/pwritev64v2.c

@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <errno.h>
 #include <unistd.h>
 #include <sys/uio.h>