New API function freefare_get_tag_uid().

- Deprecates mifare_classic_get_uid() and mifare_ultralight_get_uid().

test/test_mifare_classic.c

@@ -357,3 +357,15 @@ test_mifare_classic_sector_boundaries (void)
 	}
     }
 }
+
+void
+test_mifare_classic_get_uid_freefare_get_tag_uid (void)
+{
+    char *s1 = mifare_classic_get_uid (tag);
+    char *s2 = freefare_get_tag_uid (tag);
+
+    cut_assert_equal_string (s1, s2, cut_message ("UID don't match"));
+
+    free (s1);
+    free (s2);
+}