[Users] Dissipation in McLachlan.

Hi all,

We have just commited a change to McLachlan in the development version of the Einstein toolkit. We have changed the default value for the parameter apply_dissipation from "always" to "never". Since the default value for the dissipation strength is zero, anybody who uses the default values shouldn't see any change (except for an improvement in speed).

However, anybody who sets EpsDiss to anything different than zero and expects McLachlan to apply dissipation now also has to explicitly set apply_dissipation to "always".

Cheers,

Peter