Remove the bulk of the NaCl port.

The NaCl port has not been actively maintained since before the 2.25
release.  The complementary GCC back-end was never contributed to GCC,
and we are given to understand that the current NaCl SDK has switched
to Clang and therefore cannot be used to build glibc anymore, so we
doubt that the port remains useful.

This commit simply removes the sysdeps/arm/nacl and sysdeps/nacl
directories and the abi-tags entry.

	Remove the NaCl port.
	* abi-tags: Remove .*-.*-nacl.* entry.
	* sysdeps/arm/nacl: Remove directory and contents.
	* sysdeps/nacl: Likewise.

1 files changed, 0 insertions, 145 deletions

diff --git a/sysdeps/nacl/bits/fcntl.h b/sysdeps/nacl/bits/fcntl.h
deleted file mode 100644
index fda5738952..0000000000
--- a/sysdeps/nacl/bits/fcntl.h
+++ /dev/null
@@ -1,145 +0,0 @@
-/* O_*, F_*, FD_* bit values.  NaCl version.
-   Copyright (C) 2015-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   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/>.  */
-
-#ifndef _FCNTL_H
-#error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
-#endif
-
-
-/* File access modes for `open' and `fcntl'.  */
-#define O_RDONLY        0       /* Open read-only.  */
-#define O_WRONLY        1       /* Open write-only.  */
-#define O_RDWR          2       /* Open read/write.  */
-
-
-/* Bits OR'd into the second argument to open.  */
-#define O_CREAT         00100   /* Create file if it doesn't exist.  */
-#define O_EXCL          00200   /* Fail if file already exists.  */
-#define O_TRUNC         01000   /* Truncate file to zero length.  */
-#define O_NOCTTY        0       /* Don't assign a controlling terminal.  */
-#define O_ASYNC         020000  /* Send SIGIO to owner when data is ready.  */
-#define O_FSYNC         010000  /* Synchronous writes.  */
-#define O_SYNC          O_FSYNC
-#ifdef __USE_XOPEN2K8
-# define O_DIRECTORY    00200000        /* Must be a directory.  */
-# define O_NOFOLLOW     00400000        /* Do not follow links.  */
-# define O_CLOEXEC      02000000        /* Set close_on_exec.  */
-#endif
-#if defined __USE_POSIX199309 || defined __USE_UNIX98
-# define O_DSYNC        O_SYNC          /* Synchronize data.  */
-# define O_RSYNC        O_SYNC          /* Synchronize read operations.  */
-#endif
-
-/* All opens support large file sizes, so there is no flag bit for this.  */
-#ifdef __USE_LARGEFILE64
-# define O_LARGEFILE    0
-#endif
-
-/* File status flags for `open' and `fcntl'.  */
-#define O_APPEND        02000   /* Writes append to the file.  */
-#define O_NONBLOCK      04000   /* Non-blocking I/O.  */
-
-#ifdef __USE_MISC
-# define O_NDELAY       O_NONBLOCK
-#endif
-
-#ifdef __USE_MISC
-/* Bits in the file status flags returned by F_GETFL.
-   These are all the O_* flags, plus FREAD and FWRITE, which are
-   independent bits set by which of O_RDONLY, O_WRONLY, and O_RDWR, was
-   given to `open'.  */
-# define FREAD          1
-# define FWRITE         2
-
-/* Traditional BSD names the O_* bits.  */
-# define FASYNC         O_ASYNC
-# define FFSYNC         O_FSYNC
-# define FSYNC          O_SYNC
-# define FAPPEND        O_APPEND
-# define FNDELAY        O_NDELAY
-#endif
-
-/* Mask for file access modes.  This is system-dependent in case
-   some system ever wants to define some other flavor of access.  */
-#define O_ACCMODE       (O_RDONLY|O_WRONLY|O_RDWR)
-
-/* Values for the second argument to `fcntl'.  */
-#define F_DUPFD         0       /* Duplicate file descriptor.  */
-#define F_GETFD         1       /* Get file descriptor flags.  */
-#define F_SETFD         2       /* Set file descriptor flags.  */
-#define F_GETFL         3       /* Get file status flags.  */
-#define F_SETFL         4       /* Set file status flags.  */
-#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
-#define F_GETOWN        5       /* Get owner (receiver of SIGIO).  */
-#define F_SETOWN        6       /* Set owner (receiver of SIGIO).  */
-#endif
-#define F_GETLK         7       /* Get record locking info.  */
-#define F_SETLK         8       /* Set record locking info (non-blocking).  */
-#define F_SETLKW        9       /* Set record locking info (blocking).  */
-/* Not necessary, we always have 64-bit offsets.  */
-#define F_GETLK64       F_GETLK /* Get record locking info.  */
-#define F_SETLK64       F_SETLK /* Set record locking info (non-blocking).  */
-#define F_SETLKW64      F_SETLKW/* Set record locking info (blocking).  */
-#ifdef __USE_XOPEN2K8
-# define F_DUPFD_CLOEXEC 12     /* Duplicate file descriptor with
-                                   close-on-exec set.  */
-#endif
-
-/* File descriptor flags used with F_GETFD and F_SETFD.  */
-#define FD_CLOEXEC      1       /* Close on exec.  */
-
-
-#include <bits/types.h>
-
-/* The structure describing an advisory lock.  This is the type of the third
-   argument to `fcntl' for the F_GETLK, F_SETLK, and F_SETLKW requests.  */
-struct flock
-  {
-    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
-    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
-    __off_t l_start;    /* Offset where the lock begins.  */
-    __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
-    __pid_t l_pid;      /* Process holding the lock.  */
-  };
-
-#ifdef __USE_LARGEFILE64
-/* Note this matches struct flock exactly.  */
-struct flock64
-  {
-    short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
-    short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
-    __off_t l_start;    /* Offset where the lock begins.  */
-    __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
-    __pid_t l_pid;      /* Process holding the lock.  */
-  };
-#endif
-
-/* Values for the `l_type' field of a `struct flock'.  */
-#define F_RDLCK 1       /* Read lock.  */
-#define F_WRLCK 2       /* Write lock.  */
-#define F_UNLCK 3       /* Remove lock.  */
-
-/* Advice to `posix_fadvise'.  */
-#ifdef __USE_XOPEN2K
-# define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
-# define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
-# define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
-# define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
-# define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
-# define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
-#endif