[M3commit] CVS Update: cm3

[Rodney M. Bates]

CVSROOT:	/usr/cvs
Changes by:	rodney at birch.	08/11/12 16:21:41

Modified files:
	cm3/m3-libs/libm3/src/pickle/ver2/: Pickle2.m3 

Log message:
	Pickles in both PM3 and CM3 have some hard-coded
	fingerprints for common types, but the values
	are not consistent about byte order.
	
	Fix CM2 pickle-reading code to accept values of types
	NULL, ROOT, UNTRACED ROOT, ADDRESS, AND REFANY,
	written by PM3 pickle-writing code.  Probably,
	the latter two can't even happen in a pickle, unless
	somebody wrote a custom special for them.
	
	This still won't handle a more complex type that depends
	on these types, e.g., an object that contains a field of
	one of them.  This latter is probably not feasable, because
	it would require "decrypting" fingerprints, and the hash
	algorithm for fingerprints is lossy.