added timer
putting mmixal.c back in
small changes
removing the INT_NOMEM logic in favour of buserror
small bug fixes for ss2011
implementing outgoiung BITBLT for winvram, adjusting help file
getting gnu mmix to compile under WIN32
ensure a debug printout after SWYM
making mmix work with the new joint change file
adding unix timer, buserror and merging gdbmmix into mmix
