Safari 8.0.5, 7.1.5, and 6.2.5 security updates

Apple has just release updated versions of Safari: 8.0.5 for Yosemite (which is bundled in the OS X 10.10.3 update so does not require separate updating), and versions 7.1.5 and 6.2.5 for earlier systems.

These contain significant security fixes, and are strongly recommended. As usual they are delivered through the App Store.