pgsql: Add log_min_autovacuum_duration per-table option

Add log_min_autovacuum_duration per-table option

This is useful to control autovacuum log volume, for situations where
monitoring only a set of tables is necessary.

Author: Michael Paquier
Reviewed by: A team led by Naoya Anzai (also including Akira Kurosawa,
Taiki Kondo, Huong Dangminh), Fujii Masao.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/4ff695b17d32a9c330952192dbc789d31a5e2f5e

Modified Files
--------------
doc/src/sgml/ref/create_table.sgml | 16 +++++++++++++---
src/backend/access/common/reloptions.c | 10 ++++++++++
src/backend/commands/analyze.c | 31 +++++++++++++++++--------------
src/backend/commands/vacuum.c | 7 +++++--
src/backend/commands/vacuumlazy.c | 8 ++++----
src/backend/postmaster/autovacuum.c | 7 +++++++
src/bin/psql/tab-complete.c | 2 ++
src/include/commands/vacuum.h | 5 ++++-
src/include/utils/rel.h | 1 +
9 files changed, 63 insertions(+), 24 deletions(-)