plt-racket 5.93

Closes #26357.

Signed-off-by: Brett Koonce <koonce@gmail.com>
mercurial 2.9

Closes #26362.
z80asm: improve test by assembling a small file

Closes #26363.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
erlang: pull/142 was merged, patch no longer needed for HEAD