part of i#774 x64 reachability: native_elf.c
part of i#774 x64 reachability: native_elf.c

Diff from rnk for making native_elf.c reachability-aware.

SVN-Revision: 2014

sigma-random/dynamorio,bl4ckic3/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,daksunt/dynamorio,sigma-random/dynamorio,daksunt/dynamorio,bl4ckic3/dynamorio,bl4ckic3/dynamorio,code4bones/dynamorio,code4bones/dynamorio,AmesianX/dynamorio,code4bones/dynamorio,code4bones/dynamorio,daksunt/dynamorio,AmesianX/dynamorio,sigma-random/dynamorio,bl4ckic3/dynamorio