Make PreprocessorOptions::DetailedRecordIncludesNestedMacroExpansions false by default.

Recording nested macro expansions is not useful, plus it fixes rdar://10893630

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150995 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Frontend/PreprocessorOptions.h b/include/clang/Frontend/PreprocessorOptions.h
index 2394b63..b977030 100644
--- a/include/clang/Frontend/PreprocessorOptions.h
+++ b/include/clang/Frontend/PreprocessorOptions.h
@@ -162,7 +162,7 @@
   
 public:
   PreprocessorOptions() : UsePredefines(true), DetailedRecord(false),
-                          DetailedRecordIncludesNestedMacroExpansions(true),
+                          DetailedRecordIncludesNestedMacroExpansions(false),
                           DisablePCHValidation(false), DisableStatCache(false),
                           DumpDeserializedPCHDecls(false),
                           PrecompiledPreambleBytes(0, true),