move scripts to .bin

.bin/etc-files-list-update/util/find-new-urls.awk

@@ -0,0 +1,14 @@
+#!/usr/bin/awk -f
+BEGIN {
+  # load all the URLs we scanned already
+  command = "util/print-urls.sh"
+  while (command | getline) {
+    urls[$0] = 1 # add to set
+  }
+  close(command)
+  # get package URLs that do not appear in the list
+  command = "util/get-package-urls.sh"
+  while (command | getline) {
+    if (!($0 in urls)) print
+  }
+}