* Continuing unit testing of PKE simulator. It now successfully matches

* Continuing unit testing of PKE simulator.  It now successfully matches
  the SCEI PKE simulator's output on its own test sample (tsv432.in).

	* sky-pke.h (PKE_MEM_READ, PKE_MEM_WRITE, PKE_REG_MASK_SET): Add
 	trace file records.

	* sky-pke.c: (pke_track_write): Removed function.  Replaced with
 	in-line modifications to VU tracking tables.
	(pke_attach): Attach VU tracking tables.  Use line buffering on
 	trace files.
	(pke_issue): Spit out additional trace records.
	(pke_pc_operand_bits): Correct bitfield masking error.
	(*): Replace sim_read/write with kludge PKE_MEM_READ/WRITE
 	throughout.
	(pke_code_unpack): Correct numerous small bugs in operand decoding
 	etc.