patch 9.0.1963: Configure script may not detect xattr

Problem:  Configure script may not detect xattr correctly
Solution: include sys/xattr instead of attr/xattr,
          make Test_write_with_xattr_support() test
          xattr feature correctly

This also applies to the Smack security feature, so change the include
and configure script for it as well.

closes: #13229

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
diff --git a/src/configure.ac b/src/configure.ac
index e21e234..4b2046d 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -480,7 +480,7 @@
   AC_MSG_RESULT(yes)
 fi
 if test "$enable_smack" = "yes"; then
-  AC_CHECK_HEADER([attr/xattr.h], true, enable_smack="no")
+  AC_CHECK_HEADER([sys/xattr.h], true, enable_smack="no")
 fi
 if test "$enable_smack" = "yes"; then
   AC_MSG_CHECKING(for XATTR_NAME_SMACKEXEC in linux/xattr.h)
@@ -520,7 +520,7 @@
 	, enable_xattr="yes")
 if test "$enable_xattr" = "yes"; then
   AC_MSG_RESULT(yes)
-  AC_CHECK_HEADER([attr/xattr.h], [AC_DEFINE(HAVE_XATTR)])
+  AC_CHECK_HEADER([sys/xattr.h], [AC_DEFINE(HAVE_XATTR)])
 else
   AC_MSG_RESULT(no)
 fi