Process-stuff

The VMProcess implementation in the GNU CP is kind of aimed at *nix-processes using fork and reap and such. The Process.java implementation is relatively easy and actually more coherent with the Amiga-way of handling processes. So, a JAmiga-native VMprocess-class is probably the best route to go. Should lead to fewer internal/extrnal lists for JAmiga-processes, allowing us to use the Amiga processlists directly.