currently each and every device specific instance and model structure
duplicates the memory layout of a struct GENmodel / GENinstance
further the first structure elements behind a GENinstance header
are reinterpreted as a sort of a generic "node" array.
This business is very error prone, and makes it difficult to
extend struct GENmodel / struct GENinstance.
This patch makes this business much more bearable.
Allow to register a callback function in the cfunc.mod files,
which will be invoked in MIFdestroy.
Usefull to "free" memory which has been allocated locally in a cfunc.mod file.
rlar
Henrik Forsten
pnenzi
stefanjones