specification.md: mark as deprecated
spec: introduction, headlines
doc: prepare for asciidoc based specification
docs/specification.md: note Process Update_Location_HLR
docs: update to feedback from Neels
Most importantly, there is no ACK SMS anymore, because the next LU isthe implicit ACK. While at it, I've filled in the first TS we probablyneed to update.
Related: OS#440
README/docs: add FIXME: needs to be updated
docs/specification: mention simapplet counting LUs
docs/specification.md: begin specification
Start with a rough draft of what I expect that needs to be changed inthe specs, so we can extend it with the actual chapters in the TS in thenext step.