This is read/write memory owned by the process, which can reallocate it,
which CMD.EXE does.
(FIXME comment by ryan, rest of the patch was from cracyc.)
This currently only works with a simple Hello World program, but this is the
bulk of the work to 16-bit program support.
Still need some minor effort to get 16-bit DLLs working, and of course we
need to implement a ton of missing 16-bit API calls.
cracyc
Ryan C. Gordon