cpu count backwards compatible to CPU2000

spec.py

@@ -250,7 +250,8 @@ def generate_spec_config(options):
 	cores_per_chip = int(cpuinfo["cpu cores"])
 	cores = cores_per_chip * chips
 	contents.append("hw_nchips = %d" % chips)
-	contents.append("hw_ncores = %d" % cores)
+	contents.append("hw_ncores = %d" % cores) # CPU2006
+	contents.append("hw_ncpu = %d" % cores) # CPU2000
 	contents.append("hw_ncoresperchip = %d" % cores_per_chip)
 	contents.append("hw_vendor = %s" % cpuinfo["vendor_id"])
 	contents.append("hw_memory = %s" % meminfo["MemTotal"])