Re: Backend memory dump analysis

Here's an updated patch that adjusts the output format per discussion:

- context identifier at the end of the line, so it's easier to see the
numbers

- identifiers truncated at 100 bytes, control characters replaced by
spaces

Also, I hacked things so that dynahash hash tables continue to print
the way they did before, since the hash table name is really what
you want to see there.

Sample output is same test case as last time (dump at end of plpgsql.sql
regression test script).

Barring objection I plan to push this shortly.

regards, tom lane