acking branch 'origin/jcb-proposed_master' into proposed_master

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If wrsLeapSecStatusDetails returns 'leapSecFileExpired' then it will be
propagated to wrsLeapSecStatus as follow:
- Timing mode is GM or FR : Warning
- Timing mode is BC: Ok

The conversion has been fixed now for negative values.

Conflicts:
	userspace/ppsi

Compiled from wrpc-sw commit:
3e4f8d1 rt_cpu: disable PLL verbose mode by default (output on UART is blocking and greatly slows down LDPC port calibration in the WR Switch)

If you call lldpcli from a program, stdout will be fully buffered, and
we won't get back the result of "show neighbors" (nor anything else).
Expectedly, stderr messages are delivered immediately.

You can verify this by running "cat | lldpcli", give comamnds and
then exit with ctrl-D (EOF).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>