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, 0 insertions, 47 deletions

diff --git a/ports/sysdeps/tile/tilegx/string-endian.h b/ports/sysdeps/tile/tilegx/string-endian.h
deleted file mode 100644
index 0c4d51766d..0000000000
--- a/ports/sysdeps/tile/tilegx/string-endian.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* Copyright (C) 2011-2014 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/>.  */
-
-/* Provide a mask based on the pointer alignment that
-   sets up non-zero bytes before the beginning of the string.
-   The MASK expression works because shift counts are taken mod 64.
-   Also, specify how to count "first" and "last" bits
-   when the bits have been read as a word.  */
-
-#include <stdint.h>
-
-#ifndef __BIG_ENDIAN__
-#define MASK(x) (__insn_shl(1ULL, (x << 3)) - 1)
-#define NULMASK(x) ((2ULL << x) - 1)
-#define CFZ(x) __insn_ctz(x)
-#define REVCZ(x) __insn_clz(x)
-#else
-#define MASK(x) (__insn_shl(-2LL, ((-x << 3) - 1)))
-#define NULMASK(x) (-2LL << (63 - x))
-#define CFZ(x) __insn_clz(x)
-#define REVCZ(x) __insn_ctz(x)
-#endif
-
-/* Create eight copies of the byte in a uint64_t. */
-static inline uint64_t copy_byte(uint8_t byte)
-{
-  uint64_t word = byte;
-  word = __insn_bfins(word, word, 8, 15);
-  word = __insn_bfins(word, word, 16, 31);
-  word = __insn_bfins(word, word, 32, 63);
-  return word;
-}