libdc1394: IIDC/DCAM specifications

I used to provide the IIDC specifications (also known as DCAM specifications) for free on request. This was granted to me by the IIDC working group. However, I'm starting to receive many requests so instead I will put that here. Best of all, you can get all previous versions too!

• IIDC 1.04
• IIDC 1.20
• IIDC 1.30
• IIDC 1.31
• IIDC 1.32
• IIDC2 1.0
• IIDC2 1.1