[Nasal-cvs] lib.c code.c

[Andy Ross]

Update of /home/nasal-cvs/nasal/src
In directory purr:/tmp/cvs-serv9444

Modified Files:
	lib.c code.c 
Log Message:
Behavior change: hash lookups with the [] operator (but not the
hash.field syntax) now return nil instead of throwing an error on a
missing element.