After around 36 hours, one PPS was missing. This was due to an issue in
the WR extension. When the sequence id in the announce message was
moving from 65535 to 0, the WR handshake was restarted. As a result of
that, the side effects would be :
- a missing PPS
- an unlock of the PLL

Some scripts write to files to pass information to SNMP.
To avoid read access failure from SNMP, the previous file is copied to a
.old file then the new one is created.

If a static entry is in the HASH table, this is for a reason. In the
very unlikely event, when the same MAC is seen on another port,
the static entry should not be overriden by the learned (dynamic).
This was not the case. This commit prevents static MAC entries
from being overriden by dynamic entries.

Shmem is locked for the entire execution of the rtu_fd_init()
function. Yet, this function call few clean_*() functions that
attempt to lock shmem before cleaning... this caused shmem
errors. It was fixed by specifying input parameter to clean_*()
functions. The parameter specifies whether locking is required
or not.

The update is related to the new feature introduced in Kconfig for the
logging of messages (default_syslog)

The system clock monitor measures the offset between the local time and
the NTP time. If this offset exceed a given threshold an alarm will be
raised .

KConfig has been improved adding new extra constraints when the timing
mode is changed. It has an impact on port configuration
(externalPortConfiguration & default bmc mode) and also on the
overwritten clock class.

Using date was not a good ideal (i.e. format "file_name-date")
because the date on the switch can change due to PTP synchronization.

Now, files are indexed with number

Updates:
- information in the body of the message about severity was
  not aligned with the severity reported to syslog, now all
  is aligned
- aligned format of all messages from snmpd that use snmp_log()

Another option is added in Kconfig that applies to all the deamons
that provide <facility*8+priority> in their messages. If logging
in Kconfig is set to "default_syslog", the logger is run with
the option --prio-prefix. With this option, the facility/priority
from message is used. All the other otions for "Logint directions.."
are left unchnaged.

Logger can interpret get log facility & level (error, info, etc) from
log message if such info is provided properly. I.e. it needs to be
enclosed in <> and the first thing in the message. The wrs-msg.c file
in the libwr was changed such that the log facility & level ares properly
printed in log messages, and thus later properly interpreted by the syslog
elastic search on the server. For this, wrs_msg lib needs to know the
faciltiy of the application that uses it. Thus, the wrs_msg_init()
function was updated (in the library and all its calls in applications)

- Add a new tool (wrs_leapsec) to check for an incoming leap second. It
is done by parsing the leap second file. If a leap second is detected
then adjustment parameters for the clock algoritm are set in the kernel.
- Start the tool at startup
- With cron, execute the tool every 3 hours
- As many tools need to parse the leap seconds file, functions have been
added in the library and then called by these tools

- Install cron
- New leap_seconds_file_update script. Launched at startup and then 1
time per day by cron
- Kconfig update to setup from where the file should be downloaded

The boot server IP is saved into /tmp/boot_server_ip. It can be useful
to get it to download files from this location in other scripts.

The -n option in the wr_date tool is used for a dry run. It execute the
code without applying changes in the system and the hardware.
However calling "wr_date -n set host" was not setting the date but
applying the TAI offset. To make things more consistant, a new option
has been added. Calling "wr_date set host tai" now sets only the TAI
offset.
The wr_date script has been changed to take into account this
modification of the behavior.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Otherwise most of the time is spent with the HAL's shmem locked.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

If the build or image is broken and sdb-read is missing don't try to
overwrite hwinfo
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Forward messages from scripts running before syslog is available
to the kernel log. Before these messages were printed only to the
console.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

This reduces the size of a firmware by 5MB.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Uplift util-linux to a version 2.28.2
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Having just a small message indicating that a build error has been
detected at the end of the script is not sufficient. The tarball is
created but is invalid and might be used.
Now, when an error is detected the build procedure is immediately
aborted. The tarball is not then created.

- Was returning the !busy before. return busy value (1=busy, 0=not busy)
is more clear to understand.

Init scripts start logger that prints output of deamons into syslogs.
This logger is run with -p to attach tag. This tag is interpreted
as the process that produces the following message. In the many init
scripts this tag was set to wr-switch, incorrectly. This commit
corrects it to include the name of the daemon.

rsyslog outputs syslog to /tmp/syslog until the file is ~1MB, then
the file is moved/renamed to a "rotate file" (name includes date &
time) while the /tmp/syslog is filled by rsyslog from zero. Max
number of 10 "rotate files" are kept. The oldest is removed when
new file from rsyslog comes. Next step is to make this a default
option in kconfig

changed parameter for showing backplane version from -p to -b,
left -p for backward compatibility/WWW

As HA profile, the WR profile must always have the  asymmetryCorrection
enabled.

- Add round trip delay (delayMM)
- For pp_time structure, display in time in ns unit if the time is less
than 1 second (in absolute)

- Remove HA profile. Can be re-enabled easily in the
gen_kconfig_port_timing.sh script
- Add extra help to externalPortConfiguration

Compiled from commit 780ed52 of wrpc-sw repository.

When the passwd is called on a system with a date set to 1st Jan
1970, the change date is set to 0, which has a special meaning:
"The value 0 has a special meaning, which is that the user should change
her pasword the next time she will log in the system."
Thanks to this patch, when the password is changed on 1st on Jun 1970 the
change date is set to 1.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Revert part of a commit:
f14e28c9 Setup default config for the switch (WR profile by default)
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>