ulimit: remove buggy bsd implementation

The bsd implementation of ulimit produces wrong return values, so remove it
in favour of the posix implementation.

The only regression for non-Linux implementations using bsd sysdeps and not
providing an own ulimit is that the __UL_GETMAXBRK case (which is non-standard)
is left unimplemented (giving EINVAL).

2013-01-15  Pino Toscano  <toscano.pino@tiscali.it>

	* sysdeps/unix/bsd/ulimit.c: Remove file.

--- a/sysdeps/unix/bsd/ulimit.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/* Copyright (C) 1991-2013 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/>.  */
-
-#include <errno.h>
-#include <stdarg.h>
-#include <sysdep.h>
-#include <ulimit.h>
-#include <unistd.h>
-#include <sys/resource.h>
-
-
-extern int _etext;
-
-/* Function depends on CMD:
-   1 = Return the limit on the size of a file, in units of 512 bytes.
-   2 = Set the limit on the size of a file to NEWLIMIT.  Only the
-       super-user can increase the limit.
-   3 = Return the maximum possible address of the data segment.
-   4 = Return the maximum number of files that the calling process
-       can open.
-   Returns -1 on errors.  */
-long int
-ulimit (int cmd, ...)
-{
-  struct rlimit limit;
-  va_list va;
-  long int result = -1;
-
-  va_start (va, cmd);
-
-  switch (cmd)
-    {
-    case UL_GETFSIZE:
-      /* Get limit on file size.  */
-      if (getrlimit (RLIMIT_FSIZE, &limit) == 0)
-	/* Convert from bytes to 512 byte units.  */
-	result = limit.rlim_cur / 512;
-      break;
-
-    case UL_SETFSIZE:
-      /* Set limit on file size.  */
-      {
-	long int newlimit = va_arg (va, long int);
-
-	if ((rlim_t) newlimit > RLIM_INFINITY / 512)
-	  {
-	    limit.rlim_cur = RLIM_INFINITY;
-	    limit.rlim_max = RLIM_INFINITY;
-	  }
-	else
-	  {
-	    limit.rlim_cur = newlimit * 512;
-	    limit.rlim_max = newlimit * 512;
-	  }
-
-	result = setrlimit (RLIMIT_FSIZE, &limit);
-      }
-      break;
-
-    case __UL_GETMAXBRK:
-      /* Get maximum address for `brk'.  */
-      if (getrlimit (RLIMIT_DATA, &limit) == 0)
-	result = ((long int) &_etext) + limit.rlim_cur;
-      break;
-
-    case __UL_GETOPENMAX:
-      result = sysconf (_SC_OPEN_MAX);
-      break;
-
-    default:
-      __set_errno (EINVAL);
-    }
-
-  va_end (va);
-
-  return result;
-}