bug#38796: 26.3; `view-lossage': Use a variable for the lossage limit

[Drew Adams]

> It's a constant size of a vector that records the keys in a cyclical
> fashion.  So it isn't enough to expose the value to Lisp; one must
> also write code that reallocates the vector when the value changes,
> and copies the keystrokes from the old to the new vector in the
> correct order.  Not rocket science, but still.

I see.  I hope such an enhancement is made.

> Patches are welcome.

A C patch will have to come from someone other than me.