[MiNT] Insert key

[Peter Slegg <p.slegg@scubadivers.co.uk>]

Some time ago I raised the issue of the function of the Insert
key (Ctrl-Insert) in Texel. This has always been the combo for
inserting a row but in recent versions of Mint this hasn't worked.
It was argued that Insert is a modifier key like Shift or Control
(I don't agree and the combo works in TOS).

Today I have been running with 1.18 in a minimal set-up and this
does not disable the keyclicks because COPS is not running.

Anyway, what I just noticed is that Ctrl, Shift etc. do not cause
a keyclick but Insert does, so at that level the OS thinks that Insert
does not behave like a modifier key.

Peter