Refactored shared code between xbps-bin(8) and xbps-repo(8).

- xbps-repo: move protos to defs.h and remove index.h and util.h.
- xbps-bin: move code that belongs to it from xbps-repo to show-info-files.c.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091124110539-nsdjp0ajr7nn8pa3

bin/xbps-bin/remove.c

@@ -31,7 +31,7 @@
 
 #include <xbps_api.h>
 #include "defs.h"
-#include "../xbps-repo/util.h"
+#include "../xbps-repo/defs.h"
 
 int
 xbps_autoremove_pkgs(void)