Prim-op support that doesn't do anything.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Add just enough metadata to make stride scheduling possible.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Stub functions and recategorization.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Implement ticket functions.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Heap emulation draft 1 - initial rebase

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>