o Additional device/filter-level debugging messages + duplicate alias fix

o 32/64-bit size_t fix (pjc)

lib/datastruct/lvm-types.h

@@ -12,6 +12,13 @@
 #include <sys/types.h>
 #include <inttypes.h>
 
+/* Define some portable printing types */
+#if __WORDSIZE == 64
+#define PRIsize_t "lu"
+#else
+#define PRIsize_t "u"
+#endif
+
 struct str_list {
 	struct list list;
 	char *str;