Move tilegx, tilepro, and linux-generic from ports to libc.

I've moved the TILE-Gx and TILEPro ports to the main sysdeps hierarchy,
along with the linux-generic ports infrastructure.  Beyond the README
update, the move was just

    git mv ports/sysdeps/tile sysdeps/tile
    git mv ports/sysdeps/unix/sysv/linux/tile \
      sysdeps/unix/sysv/linux/tile
    git mv ports/sysdeps/unix/sysv/linux/generic \
      sysdeps/unix/sysv/linux/generic

I updated the relevant ChangeLogs along the lines of the ARM move
in commit c6bfe5c4d75 and tested the 64-bit tilegx build to confirm that
there were no changes in "objdump -dr" output in the shared objects.

1 files changed, 52 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/generic/futimesat.c b/sysdeps/unix/sysv/linux/generic/futimesat.c
new file mode 100644
index 0000000..0e9c983
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/generic/futimesat.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 2005-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <utime.h>
+#include <sys/time.h>
+#include <sysdep.h>
+#include <kernel-features.h>
+
+
+/* Change the access time of FILE relative to FD to TVP[0] and
+   the modification time of FILE to TVP[1].  */
+int
+futimesat (int fd, const char *file, const struct timeval tvp[2])
+{
+  struct timespec tsp[2];
+  int result;
+
+  if (tvp)
+    {
+      if (tvp[0].tv_usec >= 1000000 || tvp[0].tv_usec < 0 ||
+          tvp[1].tv_usec >= 1000000 || tvp[1].tv_usec < 0)
+        {
+          __set_errno (EINVAL);
+          return -1;
+        }
+      TIMEVAL_TO_TIMESPEC (&tvp[0], &tsp[0]);
+      TIMEVAL_TO_TIMESPEC (&tvp[1], &tsp[1]);
+    }
+
+  result = INLINE_SYSCALL (utimensat, 4, fd, file, tvp ? tsp : NULL, 0);
+  return result;
+}