sbin/hammer: Make hammer info print rootvol

The existence of "root volume" in HAMMER is mentioned in
error messages and dmesg as well as hammer(8) manpage,
but the problem is that no command really

sbin/hammer: Make hammer info print rootvol

The existence of "root volume" in HAMMER is mentioned in
error messages and dmesg as well as hammer(8) manpage,
but the problem is that no command really tells you which
one is the root volume. This is too obvious if you have
looked at the source, but no idea if otherwise.

Currently the only one explicitly tells you seems to be
a printf in newfs_hammer added by dae8f186 in 2015.

This commit adds hammer info a printf for root volume #,
which is still not clear enough since it's just a number,
but not a block device path.

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lib/libhammer: Remove duplicated and unnecessary macro definitions

- All these macros are already defined in sbin/hammer/*.

- HAMMER_BUF* are macros internally used by hammer userspace
to manage

lib/libhammer: Remove duplicated and unnecessary macro definitions

- All these macros are already defined in sbin/hammer/*.

- HAMMER_BUF* are macros internally used by hammer userspace
to manage hammer's 16KB buffers. Unless buffer management
code is migrated to libhammer, it doesn't make much sense
only to have these macros in library code.

- All the rest of the macros are locally defined and used by
hammer commands. No need to have them in header files.

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sbin/hammer: Move COLLECT_XXX macros to cmd_blockmap.c

- These macros are magic numbers locally used by checkmap.
Library users don't need to know collects' hash table size.

libhammer - Add an overlooked function that releases snaps

- Add a function to release resources allocated for libhammer_pfs_get_snapshots.
- Release snapshot resources when releasing the fsinfo str

libhammer - Add an overlooked function that releases snaps

- Add a function to release resources allocated for libhammer_pfs_get_snapshots.
- Release snapshot resources when releasing the fsinfo struct.

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libhammer - Preparation for snapshot handling & fixes

Trivial changes:
- Function renaming to actually match what they are
describing.
- Clearer variable naming.

Additions:
- Structures to ho

libhammer - Preparation for snapshot handling & fixes

Trivial changes:
- Function renaming to actually match what they are
describing.
- Clearer variable naming.

Additions:
- Structures to hold snapshot data.
- Functions to retrieve snapshots from metadata for PFSes.
- A file for version compatibility functions.
- A function to return the canonical access path of a
PFS which is suitable for opening.
- Wrappers to operate per PFS snapshot list.

Changes & fixes:
- Use the new functions to gather all snaps of a PFS.
- Adapt hammer program for the changes.
- Check before free'ing in libhammer_free_fsinfo()
- Display the number of snapshots for unmounted PFSes.

Still missing:
- Manpages changes.

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libhammer - Change the way PFS mounts are detected

- libhammer_find_pfs_mount() now takes a single argument which
is the unique_uuid used for the search.
- This solves a problem when passing the p

libhammer - Change the way PFS mounts are detected

- libhammer_find_pfs_mount() now takes a single argument which
is the unique_uuid used for the search.
- This solves a problem when passing the path of a PFS to commands
like 'hammer info' which mistakenly took the argument as the PFS#0.
- Adjust manpage to reflect current status.

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libhammer - Gather additional information about PFSes.

* Add transaction information to libhammer_pfsinfo.
* Add reserved field for future expansion.

Note that the TID numbers gathered can become o

libhammer - Gather additional information about PFSes.

* Add transaction information to libhammer_pfsinfo.
* Add reserved field for future expansion.

Note that the TID numbers gathered can become outdated for slave PFSes
that are the target of mirroring operations.

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libhammer - Add functions to help gather HAMMER statistics.

Initial import of binutils 2.22 on the new vendor branch

Future versions of binutils will also reside on this branch rather
than continuing to create new binutils branches for each new version.

libhammer - Fix a misplaced #endif for the header guardian.

libhammer - inodes field was also overlooked.

libhammer - Include overlooked field freebigblocks.

libhammer - HAMMER filesystem library.

Initial work to bring a library to help operating
HAMMER filesystems from userland.

It's barebones as of now, only "info" directive is
adapted, progressively

libhammer - HAMMER filesystem library.

Initial work to bring a library to help operating
HAMMER filesystems from userland.

It's barebones as of now, only "info" directive is
adapted, progressively the rest of the directives
will be migrated

Help-from: @swildner, @sjg

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