Move details level to AddressResolver
AddressResolver: don't load symbol tables in not needed
Profile: drop unused memory objects after loading profile data
pgconvert: implement dumping for flat mode with object/symbol details
Use "whole@basename" fake functions names for objects-only details
AddressResolver: perform demangling
pgconvert: add callgraph support when instructions isn't dumped
pgconvert: dont' allow to use callgraphs with objects-only details