Use it to restart execution if the main binary can't be loaded because
of address space conflicts, and also for Win16/DOS support.

Pass the socket for the new process from the parent through the
environment.
Perform initialisations during the new_process request.

oleaut32: Add an exception handler around code executed on the server side from the typelib marshaler.

marshaling in native oleaut32 with builtin rpcrt4 to tell them what is
wrong.

The change caused regressions in a number of applications and needs more 
study to see what the correct behaviour should be.