Add a relocation visitor to lib object. This works via caching relocated
values in a map that can be passed to consumers. Add a testcase that
ensures this works for llvm-dwarfdump.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167558 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DIContext.cpp b/lib/DebugInfo/DIContext.cpp
index ead57f9..691a92c 100644
--- a/lib/DebugInfo/DIContext.cpp
+++ b/lib/DebugInfo/DIContext.cpp
@@ -19,8 +19,9 @@
                                       StringRef aRangeSection,
                                       StringRef lineSection,
                                       StringRef stringSection,
-                                      StringRef rangeSection) {
+                                      StringRef rangeSection,
+                                      const RelocAddrMap &Map) {
   return new DWARFContextInMemory(isLittleEndian, infoSection, abbrevSection,
                                   aRangeSection, lineSection, stringSection,
-                                  rangeSection);
+                                  rangeSection, Map);
 }