pgsql: Improve header output from psql's \watch command.

Improve header output from psql's \watch command.

Include the \pset title string if there is one, and shorten the prefab
part of the header to be "timestamp (every Ns)". Per suggestion by
David Johnston.

Michael Paquier and Tom Lane

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/dea2b5960a9460c02896ed361d35e92bce02801a

Modified Files
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doc/src/sgml/ref/psql-ref.sgml | 6 ++++--
src/bin/psql/command.c | 41 +++++++++++++++++++++++++++++++----------
2 files changed, 35 insertions(+), 12 deletions(-)

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