Indirect SRTs and heap checks.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
Fix bug in CLOSURE info tables for C--.

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

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

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