Patch: Config editors

["Magnus Hagander" <mha(at)sollentuna(dot)net>]

Attached patch implements an editor for pgpass.conf/.pgpass modeled on
the HBA editor. In doing so it also:

* Adds the ability to delete a row to the pg_hba editor
* Moves the "get the name of the password file" to pgSettings so it can
be shared. Sets up a tiny bit of infrastructure for when there may be
more config files.

Trying a .zip this time so it doesn't get eaten by the list filter.

//Ma <<Config_editors.zip>> gnus

Attachment: Config_editors.zip
Description: Config_editors.zip