[check_postgres] PBINDIR and PG_CONTROLDATA

[Cédric Villemain]

Hi,

First, I would like to be able to add the pgbindir to check_postgresrc
(so add it to opt{})
Second, it looks like some of the current ENV variables are subject to review.

PGBINDIR has a TODO, I think this is nice variable name for what it
provides. for info, slony uses PGBINDIR too.
I suspect PG_CTL and PG_CONTROLDATA to be useless and that we can remove them.

Comments ?
-- 
Cédric Villemain +33 (0)6 20 30 22 52
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