Shared Object rules supported OSes

In our next build of the ruleset, we will remove the following OSes from active builds (because they are just ancient at this point):

• Fedora Core 12/i386
• Fedora Core 12/x86_64
• Fedora Core 14/i386
• Fedora Core 14/x86_64

The following builds will be added:

• Fedora Core 25/i386
• Fedora Core 25/x86_64
• Fedora Core 26/i386
• Fedora Core 26/x86_64
• Fedora Core 27/x86_64

Will update the "Supported OSes" Page soon.