Reset old make rules because the new ones didn't work too well.

docs/rules.mk

@@ -18,9 +18,9 @@ $(b)%.pdf: $(d)%.tex
 		$(LATEX) $^; \
 	done
 
-$(b)$(REPORT).pdf: $(d)$(DIAGRAMS).tex $(b)$(REPORT).bbl
+$(b)$(REPORT).pdf: $(d)$(DIAGRAMS).tex
 
 $(b)$(REPORT).bbl: $(d)$(REPORT).bib
 	BIBINPUTS=$(d) bibtex8 $(@:.bbl=.aux)
-	$(LATEX) $(d)$(REPORT).tex
-	$(LATEX) $(d)$(REPORT).tex
+	$(LATEX) $(^:.bib=.tex)
+	$(LATEX) $(^:.bib=.tex)