Switch a lot of call-sites over to using the new value-kind calculations.

llvm-svn: 120084
diff --git a/clang/lib/AST/ExprClassification.cpp b/clang/lib/AST/ExprClassification.cpp
index f24ddcb..4025f18 100644
--- a/clang/lib/AST/ExprClassification.cpp
+++ b/clang/lib/AST/ExprClassification.cpp
@@ -529,7 +529,7 @@
   return Cl::CM_Modifiable;
 }
 
-Expr::isLvalueResult Expr::isLvalue(ASTContext &Ctx) const {
+Expr::LValueClassification Expr::ClassifyLValue(ASTContext &Ctx) const {
   Classification VC = Classify(Ctx);
   switch (VC.getKind()) {
   case Cl::CL_LValue: return LV_Valid;