remove zulu (XVR-4000)
XVR-4000 was a very expensive, very rare graphics card.

*** 133,143 ****
  PMC_OBJS        += pmc.o
  TRAPSTAT_OBJS   += trapstat.o
  I2BSC_OBJS      += i2bsc.o
  GPTWOCFG_OBJS   += gptwocfg.o
  GPTWO_CPU_OBJS  += gptwo_cpu.o
- ZULUVM_OBJS     += zuluvm.o zulu_asm.o zulu_hat.o zulu_hat_asm.o
  
  JBUSPPM_OBJS    += jbusppm.o 
  RMC_COMM_OBJS   += rmc_comm.o rmc_comm_crctab.o rmc_comm_dp.o rmc_comm_drvintf.o
  RMCADM_OBJS     += rmcadm.o
  MEM_CACHE_OBJS  += mem_cache.o panther_asm.o
--- 133,142 ----