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-repo/index.c

@@ -33,7 +33,7 @@
 #include <sys/stat.h>
 
 #include <xbps_api.h>
-#include "index.h"
+#include "defs.h"
 
 /* Array of valid architectures */
 static const char *archdirs[] = { "i686", "x86_64", "noarch", NULL };