Switch to side-by-side view

--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -85,6 +85,7 @@
 	  /bin/sh ./recollinstall ${prefix}
 
 configure: VERSION configure.ac
+	rm -f configure
 	autoconf
 	@echo run configure and make again
 	exit 1