Add an options parameter to clang_saveTranslationUnit, because we'll want it later

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111016 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 4ba41b5..93fdd96 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -1454,7 +1454,12 @@
   return ATU;
 }
 
-int clang_saveTranslationUnit(CXTranslationUnit TU, const char *FileName) {
+unsigned clang_defaultSaveOptions(CXTranslationUnit TU) {
+  return CXSaveTranslationUnit_None;
+}  
+  
+int clang_saveTranslationUnit(CXTranslationUnit TU, const char *FileName,
+                              unsigned options) {
   if (!TU)
     return 1;