Merge from gnulib

This incorporates:
2015-05-27 qacl: Reimplement qset_acl and qcopy_acl (Bug#20666)
2015-05-27 file-has-acl: Split feature tests again (Bug#20667)
2015-05-27 string: fix build failure on BSD/OSX with FORTIFY_SOURCE
2015-05-26 stdio: limit __gnu_printf__ witness to gcc 4.4+
2015-05-26 inttypes: force correct mingw PRIdMAX even without <stdio.h>
2015-05-26 stdio: fix probe on mingw under gcc 5.1
* admin/merge-gnulib (GNULIB_MODULES):
Replace qacl with qcopy-acl, since we don't need the rest of qacl.
* doc/misc/texinfo.tex, lib/acl-internal.c, lib/acl-internal.h:
* lib/inttypes.in.h, lib/qcopy-acl.c, lib/qset-acl.c:
* lib/string.in.h, m4/acl.m4, m4/stdio_h.m4:
Get latest versions from gnulib.
* lib/get-permissions.c, lib/set-permissions.c: New files.
* lib/gnulib.mk, m4/gnulib-comp.m4:
Regenerate.
* nt/gnulib.mk: Merge lib/gnulib.mk changes by hand.

3 files changed, 23 insertions, 29 deletions

diff --git a/m4/acl.m4 b/m4/acl.m4
index b8f4660f7e3..5da6a43ab6a 100644
--- a/m4/acl.m4
+++ b/m4/acl.m4
@@ -1,5 +1,5 @@
 # acl.m4 - check for access control list (ACL) primitives
-# serial 19
+# serial 20
 
 # Copyright (C) 2002, 2004-2015 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
@@ -181,26 +181,12 @@ AC_DEFUN([gl_FILE_HAS_ACL],
 [
   AC_REQUIRE([gl_FUNC_ACL_ARG])
   if test "$enable_acl" != no; then
-    AC_CACHE_CHECK([for getxattr with XATTR_NAME_POSIX_ACL macros],
-      [gl_cv_getxattr_with_posix_acls],
-      [gl_cv_getxattr_with_posix_acls=no
-       AC_LINK_IFELSE(
-         [AC_LANG_PROGRAM(
-            [[#include <sys/types.h>
-              #include <sys/xattr.h>
-              #include <linux/xattr.h>
-            ]],
-            [[ssize_t a = getxattr (".", XATTR_NAME_POSIX_ACL_ACCESS, 0, 0);
-              ssize_t b = getxattr (".", XATTR_NAME_POSIX_ACL_DEFAULT, 0, 0);
-              return a < 0 || b < 0;
-            ]])],
-         [gl_cv_getxattr_with_posix_acls=yes])])
+    AC_CHECK_HEADERS([linux/xattr.h])
+    AC_CHECK_HEADERS([sys/xattr.h],
+      [AC_CHECK_FUNCS([getxattr])])
   fi
-  if test "$gl_cv_getxattr_with_posix_acls" = yes; then
+  if test "$ac_cv_header_sys_xattr_h,$ac_cv_func_getxattr" = yes,yes; then
     LIB_HAS_ACL=
-    AC_DEFINE([GETXATTR_WITH_POSIX_ACLS], 1,
-      [Define to 1 if getxattr works with XATTR_NAME_POSIX_ACL_ACCESS
-       and XATTR_NAME_POSIX_ACL_DEFAULT.])
   else
     dnl Set gl_need_lib_has_acl to a nonempty value, so that any
     dnl later gl_FUNC_ACL call will set LIB_HAS_ACL=$LIB_ACL.
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
index 06636cfe76c..0425d02241a 100644
--- a/m4/gnulib-comp.m4
+++ b/m4/gnulib-comp.m4
@@ -39,6 +39,7 @@ AC_DEFUN([gl_EARLY],
   m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
   AC_REQUIRE([gl_PROG_AR_RANLIB])
   # Code from module absolute-header:
+  # Code from module acl-permissions:
   # Code from module alloca-opt:
   # Code from module allocator:
   # Code from module at-internal:
@@ -105,7 +106,7 @@ AC_DEFUN([gl_EARLY],
   # Code from module pselect:
   # Code from module pthread_sigmask:
   # Code from module putenv:
-  # Code from module qacl:
+  # Code from module qcopy-acl:
   # Code from module readlink:
   # Code from module readlinkat:
   # Code from module root-uid:
@@ -172,6 +173,7 @@ AC_DEFUN([gl_INIT],
   m4_pushdef([gl_LIBSOURCES_DIR], [])
   gl_COMMON
   gl_source_base='lib'
+  gl_FUNC_ACL
   gl_FUNC_ALLOCA
   gl_BYTESWAP
   AC_CHECK_FUNCS_ONCE([readlinkat])
@@ -317,7 +319,6 @@ AC_DEFUN([gl_INIT],
     gl_PREREQ_PUTENV
   fi
   gl_STDLIB_MODULE_INDICATOR([putenv])
-  gl_FUNC_ACL
   gl_FUNC_READLINK
   if test $HAVE_READLINK = 0 || test $REPLACE_READLINK = 1; then
     AC_LIBOBJ([readlink])
@@ -865,6 +866,7 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/fsync.c
   lib/ftoastr.c
   lib/ftoastr.h
+  lib/get-permissions.c
   lib/getdtablesize.c
   lib/getgroups.c
   lib/getloadavg.c
@@ -895,11 +897,11 @@ AC_DEFUN([gl_FILE_LIST], [
   lib/pthread_sigmask.c
   lib/putenv.c
   lib/qcopy-acl.c
-  lib/qset-acl.c
   lib/readlink.c
   lib/readlinkat.c
   lib/root-uid.h
   lib/secure_getenv.c
+  lib/set-permissions.c
   lib/sha1.c
   lib/sha1.h
   lib/sha256.c
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index e0c4bde1f8e..f60cc2156e0 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 44
+# stdio_h.m4 serial 46
 dnl Copyright (C) 2007-2015 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -15,15 +15,21 @@ AC_DEFUN([gl_STDIO_H],
   dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and
   dnl inttypes.h behave like gnu instead of system; we must give our
   dnl printf wrapper the right attribute to match.
-  AC_CACHE_CHECK([whether inttypes macros match system or gnu printf],
+  AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros],
     [gl_cv_func_printf_attribute_flavor],
-    [AC_EGREP_CPP([findme .(ll|j)d. findme],
-      [#define __STDC_FORMAT_MACROS 1
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+       #define __STDC_FORMAT_MACROS 1
        #include <stdio.h>
        #include <inttypes.h>
-       findme PRIdMAX findme
-      ], [gl_cv_func_printf_attribute_flavor=gnu],
-      [gl_cv_func_printf_attribute_flavor=system])])
+       /* For non-mingw systems, compilation will trivially succeed.
+          For mingw, compilation will succeed for older mingw (system
+          printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */
+       #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) && \
+         (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
+       extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1];
+       #endif
+      ]])], [gl_cv_func_printf_attribute_flavor=system],
+      [gl_cv_func_printf_attribute_flavor=gnu])])
   if test "$gl_cv_func_printf_attribute_flavor" = gnu; then
     AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1],
       [Define to 1 if printf and friends should be labeled with