Read/write in PCH Sema's StdNamespace and StdBadAlloc and use a LazyDeclPtr for them that will deserialize them when needed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110031 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index a9a4f52..a42c6e8 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -127,8 +127,7 @@
     Diags(PP.getDiagnostics()), SourceMgr(PP.getSourceManager()),
     ExternalSource(0), CodeCompleter(CodeCompleter), CurContext(0), 
     PackContext(0), TopFunctionScope(0), ParsingDeclDepth(0),
-    IdResolver(pp.getLangOptions()), StdNamespace(0), StdBadAlloc(0),
-    GlobalNewDeleteDeclared(false), 
+    IdResolver(pp.getLangOptions()), GlobalNewDeleteDeclared(false), 
     CompleteTranslationUnit(CompleteTranslationUnit),
     NumSFINAEErrors(0), SuppressAccessChecking(false),
     NonInstantiationEntries(0), CurrentInstantiationScope(0), TyposCorrected(0),