Build system: Enable V=1 to disable @'s

This patch is autogenerated, with:
  git-ls-files | grep Makefile | xargs perl -i~ -pe 's/^\t\@/\t\$Q /'

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

pins/Makefile

@@ -7,16 +7,16 @@ endif
 
 
 all:		${SRC}
-	@echo	Generating DVI
-	@latex  pins.tex
+	$Q echo	Generating DVI
+	$Q latex  pins.tex
 
 pins.dvi:	pins.tex
-	@latex  pins.tex
+	$Q latex  pins.tex
 
 pdf:	pins.dvi
-	@dvipdf pins.dvi
+	$Q dvipdf pins.dvi
 
 
 .PHONY:	clean
 clean:
-	@rm -f *.dvi *.aux *.log *.ps *.toc *.bak *~
+	$Q rm -f *.dvi *.aux *.log *.ps *.toc *.bak *~