Make use of the Index library through the index-test tool.

'index-test' is now able to provide additional info for a Decl, through multiple AST files:
-Find declarations
-Find definitions
-Find references

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/index-test/Makefile b/tools/index-test/Makefile
index 4fbde29..cec0eee 100644
--- a/tools/index-test/Makefile
+++ b/tools/index-test/Makefile
@@ -18,6 +18,6 @@
 include $(LEVEL)/Makefile.config
 
 LINK_COMPONENTS := bitreader
-USEDLIBS = clangFrontend.a clangSema.a clangAST.a clangLex.a clangBasic.a 
+USEDLIBS = clangIndex.a clangFrontend.a clangSema.a clangAST.a clangLex.a clangBasic.a 
 
 include $(LLVM_SRC_ROOT)/Makefile.rules