Fix PlingSystem build for version 4.34 of FPEmulator
Ben Avison authored
Detail:
  Machine build switch now standardised to be compatible with Hdr:CPU.Arch
  since FPEmulator now relies on that. One side-effect improvement is that
  the binary in System:400.Modules.FPEmulator now includes FPA support so
  RISC OS 4 or 5 users on an A7000+ will no longer lose hardware acceleration
  if they softload FPEmulator.
Admin:
  PlingSystem build now completes again.


Version 6.83. Tagged as 'BuildSys-6_83'
2bb73d27