mark scripts deprecated by prepatch.sh changes

meld-upstream.sh

@@ -1,2 +1,6 @@
 #!/bin/sh
 nohup meld ~/minetest/games/Bucket_Game patches/deprecated/merged-upstream/Bucket_Game &
+echo
+sleep 1
+echo "This script is not maintained. see also ./prepatch.sh with --meld option"
+echo

patches/branch.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+echo "use prepatch.sh instead (which now uses and requires branch name)"
+exit 0
 master=~/minetest/games/Bucket_Game
 branches=~/git/1.pull-requests/Bucket_Game-branches
 if [ ! -d "$branches" ]; then