Changes

Copied temps are copied from the defining context into all the contexts.
If we now change the var in the debugger, it calls #tempNamed:put: on
the context.
-> make sure to walk up the context to the definition context of the
temp and set the value in the copy
fixes #4782

simplify even more: setCopyingTempToAllScopesUpToDefTemp:... sets the
current copy, too!

simpler

- simplify more - add  writeFromLocalContext: put:

- forgot some returns