[cvs-nhc98] Add virtual stack trace on errors + split io.c into parts.

[Malcolm Wallace]

malcolm: Thu Jan 18 14:33:14 CET 2001

Update of /usr/src/master/nhc/src/tracer/runtime
In directory hinken:/tmp/cvs-serv10828

Modified Files:
	Makefile io.c 
Added Files:
	browsercomms.c ident.c ident.h stacktrace.c trust.c ui.h 
Log Message:
Add virtual stack trace on errors + split io.c into parts.
  * io.c now becomes browsercomms.c, ident.c, and trust.c
  * added a virtual stack trace when program terminates uncleanly
    (e.g. error, interrupt, blackhole).