debugger: repeat last command

Regression introduced by commit 9ef9a9d.
debugger: show current line, fix for #6150
test: update require path after file move

Commit 204228b moved a few slow tests to pummel but I forgot to update
the require() path in pummel/test-debugger-repl-break-in-module.  Mea
culpa.
Merge remote-tracking branch 'remotes/upstream/master'