pgsql: Backpatch dbmirror fix for escape handling.

Log Message:
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Backpatch dbmirror fix for escape handling.

> Upstream confirmed my reply in the last mail in [1]: the complete
> escaping logic in DBMirror.pl is seriously screwew.
>
> [1] http://archives.postgresql.org/pgsql-bugs/2006-06/msg00065.php

I finally found some time to debug this, and I think I found a better
patch than the one you proposed. Mine is still hackish and is still a
workaround around a proper quoting solution, but at least it repairs
the parsing without introducing the \' quoting again.

I consider this a band-aid patch to fix the recent security update.
PostgreSQL gurus, would you consider applying this until a better
solution is found for DBMirror.pl?

Olivier, can you please confirm that the patch works for you, too?

Backpatched to 8.0.X.

Martin Pitt

Modified Files:
--------------
pgsql/contrib/dbmirror:
DBMirror.pl (r1.11 -> r1.12)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dbmirror/DBMirror.pl.diff?r1=1.11&r2=1.12)