Build fix
BuildSys-8_01 set RUN (previously unset) to be the form that runs files only, which stopped the 'Code' helper from building due to this component trying to use ${RUN} to start BASIC.
PrinterManager's build process is a bit of a dumpster fire, so rather than merely edit the command, take this opportunity to translate SuppSrc into ObjAsm format and use it to pass the source through the preprocessor, eliminating BASIC from the process.
Result is binary identical, not runtime tested.