phpMyFAQ

Currently it is possible to select 'autoJoin' on a group but I do not see it being used.
There is a function autoJoin in phpmyfaq/inc/PMF_Perm/PermMedium.php but I do not see it being called anyware.

Fixes this by:
- defining a dummy autoJoin function in PermBasic.php
- always calling autoJoin when ...

The upgrade script has several problems with postgresl:

a) postgresql does not support the syntax: alter table ... add ... after ....
This syntax is used to update the tables: 'faqdata' and 'faqdata_revisions'.
Fix this by creating a temporary table and copy'ing the data.

b) the 'faqsearches' was ...

Currently the custom error handler of phpMyFaq sends all errors to the screen.
This is not very flexible and does not allow the errors to be send to the syslog and/or a log file.

Improve this by changing the error handler to respect the values: 'display_errors' and 'log_errors'.
In addition: use ...

When an attachment is uploaded and the filename does not contain an extension then the upload fails with the error:
PHP Fatal error: Call to a member function strlen() on a non-object in /opt/supfaq/inc/String.php on line 103

The reason that this does not work is because inc/Init.php contains ...