Add a new libclang API to return a CXCompletionString for an arbitrary
cursor, from Connor Wakamo! Addresses <rdar://problem/9087798>.

llvm-svn: 136911
diff --git a/clang/tools/c-index-test/c-index-test.c b/clang/tools/c-index-test/c-index-test.c
index b737a38..0fec798 100644
--- a/clang/tools/c-index-test/c-index-test.c
+++ b/clang/tools/c-index-test/c-index-test.c
@@ -1333,7 +1333,13 @@
                                clang_getLocation(TU, file, Locations[Loc].line,
                                                  Locations[Loc].column));
       if (I + 1 == Repeats) {
+        CXCompletionString completionString = clang_getCursorCompletionString(
+                                                                        Cursor);
         PrintCursor(TU, Cursor);
+        if (completionString != NULL) {
+          printf("\nCompletion string: ");
+          print_completion_string(completionString, stdout);
+        }
         printf("\n");
         free(Locations[Loc].filename);
       }