def-use: check for memory the pointer of param points-to
def-use: check for memory the pointer of param points-to

if parameter is pointer and points-to some memory,
add def-use edges to the last definition of that memory

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

mchalupa/dg,mchalupa/dg,mchalupa/dg,mchalupa/dg