/* If we include "Stg.h" directly, we're in STG code, and we therefore
* get all the global register variables, macros etc. that go along
* with that. If "Stg.h" is included via "Rts.h", we're assumed to
/* If we include "Stg.h" directly, we're in STG code, and we therefore
* get all the global register variables, macros etc. that go along
* with that. If "Stg.h" is included via "Rts.h", we're assumed to