Clarify getRelocationAddress x getRelocationOffset a bit.

getRelocationAddress is for dynamic libraries and executables,
getRelocationOffset for relocatable objects.

Mark the getRelocationAddress of COFF and MachO as not implemented yet. Add a
test of ELF's. llvm-readobj -r now prints the same values as readelf -r.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180259 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index 1e13731..e5daf55 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -572,7 +572,7 @@
              reloc_e = i->end_relocations();
            reloc_i != reloc_e; reloc_i.increment(ec)) {
         uint64_t Address;
-        reloc_i->getAddress(Address);
+        reloc_i->getOffset(Address);
         uint64_t Type;
         reloc_i->getType(Type);
         uint64_t SymAddr = 0;