squirrelmail security update

1.4.8-5.0.1.el52.2 - Remove Redhat splash screen images 1.4.8-5.2 - Resolves: CVE-2008-2379 - fix XSS issue caused by an insufficient html mail sanitation 1.4.8-5.1 - don't transmit cookies under non-SSL connections if the session is started under an SSL https connection - Resolves: CVE-2008-3663...