[Dlang-internal] Terminology page in spec

[Johan Engelen]

Hi all,
   I'd like to have a terminology page for the spec.
At the moment, I am thinking about clearly describing terms like 
"implementation-defined behavior" and "undefined behavior", 
because there is so much confusion about it. I'm sure we'll run 
across more terms that need proper explanation (possibly 
referring to another location in the spec).

Do you agree?
If so, I'll work on adding it.

-Johan