[index] Print and test module import references.

llvm-svn: 262208
diff --git a/clang/lib/Index/IndexSymbol.cpp b/clang/lib/Index/IndexSymbol.cpp
index 39812c4..62e2fac 100644
--- a/clang/lib/Index/IndexSymbol.cpp
+++ b/clang/lib/Index/IndexSymbol.cpp
@@ -53,6 +53,9 @@
 
   } else {
     switch (D->getKind()) {
+    case Decl::Import:
+      Info.Kind = SymbolKind::Module;
+      break;
     case Decl::Typedef:
       Info.Kind = SymbolKind::Typedef; break;
     case Decl::Function: