[COMMITTERS] pgsql: Document that && can be used to search arrays.

Document that && can be used to search arrays. Also, add some cross-links to the indexing documentation, so it's easier to notice that && and other array operators have index support. Ryan Kelly, edited by me. Branch -- master Details --- http://git.postgresql.org/pg/commitdiff/6ef5baf8

[COMMITTERS] pgsql: Make pgbench -i emit only one-tenth as many status messages.

Make pgbench -i emit only one-tenth as many status messages. These days, even a wimpy system can insert 1 tuples in the blink of an eye, so there's no real need for this much verbosity. Per complaint from Tatsuo Ishii. Branch -- master Details --- http://git.postgresql.org/pg/commit