postgresql92-server @9.2.4 more robust initdb invocation

[gthb (Gunnlaugur Thor Briem)]

The current invocation of initdb suggested in post-install output:

    sudo su postgres -c '/opt/local/lib/postgresql92/bin/initdb -D /opt/local/var/db/postgresql92/defaultdb'

fails with somewhat confusing error messages if the user is in a directory not accessible to the postgres user — and that's typically the case.

The attached patch changes this to a sudo -i -u postgres invocation, which doesn't care which directory you run it from. That ought to cut down on people stumbling on the initdb step as in #32817.

[ryandesign (Ryan Carsten Schmidt)]

Doesn't this also affect the other postgresql*-server ports?

[larryv (Lawrence Velázquez)]

Either this ticket or #39341 should be closed as a duplicate.

[gthb (Gunnlaugur Thor Briem)]

Yeah, this one should be closed I guess. Sorry about that; my sleep-deprived thinking was that (a) MacPorts maintainers seemed to prefer separate tickets for separate ports (ticket guidelines being so strict-sounding), and (b) postgresql91-server and down were less important to maintain, and I didn't want to make *more* near-duplicate tickets. Really I should have gotten some sleep and then posted the one ticket. : )