PHP 5.3.0RC2

Hi

I've just been testing my installation of Squirrelmail (1.4.17) on the latest
release candidate for PHP5.3.0. It appears to work ok, except that on my
development machine (which has display_errors set to on in my php.ini)
SquirrelMail no longer works because of the output of multiple instances of a
warning message:
Deprecated: Function session_unregister() is deprecated
in ...functions/global.php on line 249
followed by the inevitable
Warning: Cannot modify header information - headers already sent by...

I'm back up and running by turning off display_errors in my apache config for
the SquirrelMail directory, but it is obviously more convenient to have
errors displayed when developing plugins.

I'm not sure of the repercussions elsewhere, but I suspect that it may be ok
to fix this by simply removing the call to session_unregister in
sqsession_unregister since this already unsets $_SESSION[$name].

PHP's session_unregister() function disappears completely as of PHP 6, so I
guess this needs to be fixed in SquirrelMail before it turns into a fatal
error.

Cheers
--
Phil Driscoll

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