More improvements

Strange memory write functions were added by Andreas for oldest NextStep releases. A new fpu patch from Toni is also under test.

I removed an old timing bugs that refreshed far too frequently the whole screen (we changed cpu frequency in "clean" hatari places... but hatari timing model was changed when it merged in latest winUAE core. also the cpu/mfp sync trick was causing problems when I tried to have less screen refresh).

To make it short : now faster :)  ... only as source code under SVN