Side effect of the performance work done previously.

I'm not sure if this is the right place to include the lib but it works.

being installed.

Previously, we checked for table_exists, but that means we need DDL
which is very heavy. Now we check by catching the exception and ignoring
it if the system isn't installed.

Now no longer counts SET NAMES 'utf8' as a write. This means most pages
show as doing no writes, which is correct. 0 writes showed up as blank
in the footer, so tweaked the code appropriately.

This ensures the db type is set correctly for adodb when it goes looking
for a driver. It used to work fine, until we stopped including ddl on
every page.

If we don't, defaults for log levels and other such things aren't
specified, which can lead to problems when an error occurs while
connecting to the database.

removing it for good this time.

This reverts commit 5780e905.

I'm going to fix installs now!

A generic message is now displayed before the actual message.

ConfigExceptions aren't used in many places right now (the IMAP auth
plugin seems to be all), so the change seems safe enough.

This has happened once for someone on an ubuntu hardy box (probably
broken-depenency related).

inside a view, from files area.