[DNA] Issue 6: DNAHostLinkIDList

[Sathya Narayanan <sathya@research.panasonic.com>]

Issue: Even though the issue was framed differently at the beginning of 
the meeting, at present the issue is: Can we remove the idea of 
DNAHostLinkIDList from the solution? Advantages of removing is obviously 
simplicity, both in logic and the text. The disadvantage in removing it 
is that the presence of LinkIDs allows for some kinda forward 
compatibility for future links which may have non-prefix link IDs.

Agreement at the meeting: Lets remove LinkID list from the solution. 
Forward compatibility can be easily supported by the LPO. Non-prefix 
linkIDs can be advertised on the LPO - since entries in LPO cannot be 
used for address configuration, it won't cause any problems - the only 
condition is that the non-prefix LinkIDs MUST be in a different 
number-space - this can be achieved by requiring that non-prefix LinkIDs 
MUST be 128 bits.

This change simplifies the host operation logic and the text in terms of 
maintaining multiple lists (DHAHostPrefixList and DNAHostLinkIDList).

Any objections?

-Sathya