autovacuum.c update

Hi,

I just updated autovacuum.c with some minor changes and looks like I
managed to involuntarily abort the email to pgsql-committers.

The changeset is here
http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/autovacuum.c.diff?r1=1.61;r2=1.62

The commit message was:

Minor changes to autovacuum worker: change error handling so that it continues
with the next table on schedule instead of exiting, in all cases instead of
just on query cancel.

Add a errcontext() line indicating the activity of the worker to the error
message when it is cancelled.

Change the WorkerInfo struct to contain a pointer to the worker's PGPROC
instead of just the PID.

Add forgotten post-auth delays, per Simon Riggs. Also to autovac launcher.

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.