Teach ``make depend'' about the new win/chain code so that the build
rules for that aren't blown away, and then run make depend to get things
up to date. I think hack.h/$(HACK_H) missing botl.h and pcmain.o missing
date.h were the only things significant that turned up.
The comment for CSOURCES says it should have all sources, but the
value had $(SYSSRC) rather than $(SYSCSRC). I've taken the comment at its
word and inserted the missing 'C'; I wonder whether that'll break anything.
Does anybody use ``make tags'' these days?
09efc215a8