[cvs-nhc98] patch applied (hat): Add virtual stack trace on errors + split io.c into parts.

Thu Jan 18 05:33:14 PST 2001 malcolm * 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). M ./src/old/runtime/Makefile -6 +16 A ./src/old/runtime/browsercomms.c A ./src/old/runtime/ident.c A ./src/old/runtime/ident.h M ./src/old/runtime/io.c -1724 +14 A ./src/old/runtime/stacktrace.c A ./src/old/runtime/trust.c A ./src/old/runtime/ui.h