Warning: Incoming Syntax Change.

[Ori Bernstein <ori@xxxxxxxxxxxxxx>]

The Myrddin syntax is getting a fairly intrusive change.

`in` is too good of a variable name to waste on a for
loop separator. Going forward, `:` will be the new
separator. That means, for example:

	for x in seq

becomes:

	for x : seq

Right now, the compiler accepts both. In a week or
two, it's gong to start warning about the earlier form,
and in a couple of months, `in` will be removed fully.

-- 
Ori Bernstein <ori@xxxxxxxxxxxxxx>