src-test/sbin/dumpfs, branch release/7.2.0

Merge r187814, r187820 from head to stable/7:

2009-02-07T11:15:53Z

Add a new flag to dumpfs(8), -f, which causes dumpfs to list all free fragments in the file system by fragment (block) number. This new mode does the necessary arithmetic to generate absolute fragment numbers rather than than the cg-relative numbers printed in the default mode. If -f is passed once, contiguous fragment ranges are collapsed into an X-Y format as free block lists are currently printed in regular dumpfs output, but if specified twice, all block numbers are printed individually, allowing both compact and more script-friendly representation. This proves quite handy when attempting to recover deleted data, as it allows exclusion of non-deleted data from blocks searched. Discussed with: jeff, Richard Clayton Sponsored by: Google, Inc. Print disk offets as %jd rather than %lld; I fixed one before committing but missed the other, which breaks 64-bit builds. Reported by: bf Reviewed by: mckusick

Replace incomprehensive description of -m by much clearer text from OpenBSD,

2007-05-12T22:35:22Z

with the exception of one word. PR: docs/112465 Submitted by: naddy Obtained from: OpenBSD MFC after: 1 week

Teach about new fields (cg_unrefs and fs_unrefs) and new FS_GJOURNAL flag.

2006-10-31T22:02:24Z

Sync program's usage() with manpage's SYNOPSIS.

2005-02-10T09:19:34Z

Mechanically kill hard sentence breaks.

2004-07-02T21:45:06Z

Remove advertising clause from University of California Regent's license,

2004-04-09T19:58:40Z

per letter dated July 22, 1999. Approved by: core, imp

Reinstate 1.40 -- swap avgfilesize and avgfpdir column order.

2003-12-07T05:27:27Z

MFC after: 3 days

I forgot about the code freeze, so back this out.

2003-12-01T00:33:57Z

Swap avgfilesize and avgfpdir order to give better column alignment.

2003-12-01T00:32:34Z

Print the dirpref avgfilesize and avgfpdir parameters.

2003-11-17T01:22:07Z

MFC after: 2 weeks