Add libclang API hook "clang_getIBOutletCollectionType" to query the collection type for iboutletcollection attributes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112139 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/c-index-test/c-index-test.c b/tools/c-index-test/c-index-test.c
index 330fa54..3f70290 100644
--- a/tools/c-index-test/c-index-test.c
+++ b/tools/c-index-test/c-index-test.c
@@ -195,6 +195,14 @@
         printf(" (unavailable)");
         break;
     }
+    
+    if (Cursor.kind == CXCursor_IBOutletCollectionAttr) {
+      CXType T =
+        clang_getCanonicalType(clang_getIBOutletCollectionType(Cursor));
+      CXString S = clang_getTypeKindSpelling(T.kind);
+      printf(" [IBOutletCollection=%s]", clang_getCString(S));
+      clang_disposeString(S);
+    }
   }
 }