Base for common NFC proposal

Hi Dave,

This is a rewriting of the intel / tizen proposal that includes support for byte arrays and MIME records that were present in the Webinos spec, reshaped to be aligned with the Sysapps group APIs. I'd like to use it as a base of discussion with the other group members, and post it to the public-nfc mailing list.

The Intel proposal is also updated to include handover, for accuracy sake, but should not change any further.

B.R.

Luc