Add support to properly dump and restore the new inode flags:

immutable, append, sync, noatime and nodump.  Add all inode
flags, new and old, to the list defined in _mk_fillconfig_ea()
of cmd/xfstests/common.dump.  Test 063 can be used to verify
the proper backup and restore of these flags.  Also update man
pages to 1) remove reference to miniroot (IRIX-only), 2) document
the new XFS_XFLAG_NODUMP inode flag as the preferred method to
exclude files, and 3) better describe how the media inventory
files can be used.

The code for the inode flags was contributed by Ethan Benson,
with copyright assignment obtained by Nathan Scott.
Modify routine _mk_fillconfig_ea() to test each xflag, new and
old.  This routine gets called by test 063 as it dumps and
restores the list of xflags and extended attributes defined in
_mk_fillconfig_ea().

common.dump

@@ -410,6 +410,14 @@ biggg		102400	$nobody	$nobody  777    attr2 some_text2  root
 sub/smalll	10	$nobody	$nobody  777    attr3 some_text3  user
 sub/biggg	102400	$nobody	$nobody  777    attr4 some_text4  root
 dir		d	$nobody $nobody  777    attr5 dir_text    user
+xflag_realtime	10	$nobody $nobody  777    XFS_XFLAG_REALTIME  some_text5  root
+xflag_prealloc	10	$nobody $nobody  777    XFS_XFLAG_PREALLOC  some_text6  root
+xflag_immutable 10	$nobody $nobody  777    XFS_XFLAG_IMMUTABLE some_text7  root
+xflag_append	10	$nobody $nobody  777    XFS_XFLAG_APPEND    some_text8  root
+xflag_sync	10	$nobody $nobody  777    XFS_XFLAG_SYNC      some_text9  root
+xflag_noatime	10	$nobody $nobody  777    XFS_XFLAG_NOATIME   some_text10 root
+xflag_nodump	10	$nobody $nobody  777    XFS_XFLAG_NODUMP    some_text11 root
+xflag_hasattr	10	$nobody $nobody  777    XFS_XFLAG_HASATTR   some_text12 root
 #
 # Add more files so that there are more than the number
 # of streams.