Log Message:
web2c: update to 2024

Part of TeXlive 2024

MetaPost:
* MPFI library now included for interval arithmetic; enabled with
  --numbersystem=interval.

pdfTeX:
* More reliable text extraction on BigEndian systems.
* More checks against corrupt pfb, fmt, pdf files.
* Avoid writing a corrupt pdf given unusual pdf inclusions.
* Manual converted to LaTeX and thoroughly reviewed, though substantive
  updates are minimal.

epTeX, eupTeX:
* eptex no longer built separately; it runs in euptex’s legacy-encoding mode.

CWEB:
* Support LuaTeX as backend TeX engine.
* Fix buffer overflow on lines with no breakpoint.