llvmnode: make actual params be aware of function pointers
llvmnode: make actual params be aware of function pointers

with function pointers one actual parameters can have more parameter
edges (to formal parameters of possibly called functions)

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

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