stage2: rework AIR memory layout

This commit changes the AIR file and the documentation of the memory
layout. The actual work of modifying the surrounding code (in Sema and
codegen) is not yet done.
5d6f7b44c1Andrew Kelley committed on 7/20/2021, 7:18:14 PMparentbfe2005
16 files changedLine totals unavailable