Repl Changes to LTS blocked

[MylesBorins]

The following PRs / Commits all need to land together
#3988 (To be grouped with #4013)

5169311
#4013 (Needs #4215 to fix)

459b106
#4026 (Needs #4215 to fix)

04b1a2f
#4027 (Blocked by #3988

f2e319b
#4100 (blocked by #4026 )

6526ae7
#4118 (blocked by #4100)

46af397
#4215 (Fixed #4013 and #4026)

213ede6

Most of the work on these were done by @cjihrig and @bnoordhuis

I can attempt to backport these in bulk, but it might be better for someone more familiar with the changes to put together a PR against v4.x-staging with all the above commits rebased and working

[MylesBorins]

/cc @jasnell

[bnoordhuis]

Do they apply cleanly? I would expect them to.

[MylesBorins]

They do not all apply cleanly

[MylesBorins]

Fixed by #4572