Missing Standard Basis structures and signatures

[pqnelson]

The Standard Basis for Standard ML specifies "required" signatures and structures, but some are missing in Moscow ML, specifically:

• Missing requires Signatures
  • GENERAL
  • IEEE_REAL
  • IMPERATIVE_IO
  • IO
  • PRIM_IO
  • STREAM_IO
  • TEXT
  • TEXT_STREAM_IO
• Missing required Structures
  • General :> GENERAL (I am guessing src/mosmllib/General.fke is a stand-in?)
  • IEEEReal :> IEEE_REAL
  • Position :> INTEGER
  • TextPrimIO :> PRIM_IO
  • Text :> TEXT (see also Structure Text is missing #19)

I noticed this when I tried to create a TextPrimIO.writer instance, but could not because it was missing :(