several improvments to the beamer template

- moved over to the new notes format (requires the new version of pdfpc)
- pre-process the logo.pdf instead of doing it in the makefile
- addes new support for putting the slide revision (from git) on the
  first slide

slides_template/Makefile

@@ -1,29 +1,44 @@
 #!/usr/bin/make
 
-all: $(patsubst %.tex,%.pdf,$(wildcard *.tex)) 
+all: notes.config vc $(patsubst %.tex,%.pdf,$(wildcard *.tex)) 
 pdf: all
 
-%.pdf: %.tex
-	mogrify -format pdf figures/logo.svg
+%.pdf: %.tex 
 	rubber -fd $<
 	extract-notes $<
 
-clean: 
-	rubber -d --clean *.tex
-	rm -f *.tmp
-	rm -f vc
-	rm -f figures/logo.pdf
-	rm -f *.pdfpc
+# by default, we produce combined notes/slides output
+notes.config:
+	echo '\setbeameroption{show notes on second screen}' > notes.config
+
+# rules for generating notesonly
+notesonly-config:
+	echo '\setbeameroption{show only notes}' > notes.config
+notesonly: notesonly-config pdf
+
+# rules for generating slides only
+slides-config:
+	echo '' > notes.config
+slides: slides-config pdf
 
 viewpdf: all
 	evince *.pdf
 
+pdfpc: notes.config
+	pdfpc -n right *pdf
+
 spell:
 	aspell -c -t --tex-check-comments -b text.tex
 
 vc:
 	vc-git
 
+clean: 
+	rubber -d --clean *.tex
+	rm -f *.tmp
+	rm -f vc
+	rm -f notes.config
+	rm -f figures/logo.pdf
+	rm -f *.pdfpc
 
-
-.PHONY: clean all
+.PHONY: clean all notesonly-config notesonly slides-config slides viewpdf pdfpc spell