Modify Autogen script to categorize interfaces and enums

[sethmlarson]

The autogen script must categorize all interfaces and enums into different modules, probably based on name.

Here's a list of categories:

• [ ] virtualbox.errors.*
• [ ] virtualbox.machine.*
• [ ] virtualbox.vbox.*
• [ ] virtualbox.cpu.*
• [ ] virtualbox.device.* (Audio, USB, Keyboard)
• [ ] virtualbox.additions.*
• [ ] virtualbox.screen.*
• [ ] virtualbox.net.*
• [ ] virtualbox.fs.*
• [ ] virtualbox.appliance.*
• [ ] virtualbox.snapshot.*
• [ ] virtualbox.guest.*
• [ ] virtualbox.medium.*
• [ ] virtualbox.perf.*
• [ ] virtualbox.events.*