#20 reimplement tsp memory mgmt

[Kent Yoder]

Instead of having separate functions for allocating
memory that's returned to an app and memory that's
not returned to an app, just call malloc everywhere
and "tag" memory if it needs to be returned to an
app.

[Kent Yoder]

Logged In: YES
user_id=1168529

This functionality was added in trousers 0.2.7.