pointer detection in the data gatherer

[ampotos]

It's a lot more easier to detect pointer at runtime than after, even with some context.
So the data gatherer may set a flag on the access_t structure when an offset is storing a value which can be a memory address. To know if a value is a memory address the size must be of a pointer size, and the value must point to a mapped address.

This must be implemented with a minimum overhead (that's why the value will not ba traced to know if it's used to do a memory access). To do that it is possible to store all section on an AVl tree and to check if the value stored is on that tree or in the block tree.