Renamed RefersToEnclosingLocal bitfield to RefersToCapturedVariable.
Bitfield RefersToEnclosingLocal of Stmt::DeclRefExprBitfields renamed to RefersToCapturedVariable to reflect latest changes introduced in commit 224323. Also renamed method Expr::refersToEnclosingLocal() to Expr::refersToCapturedVariable() and comments for constant arguments.
No functional changes.

llvm-svn: 224329
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 0d33dea..298e4e7 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -10181,7 +10181,7 @@
       QualType CaptureType = VD->getType();
       const bool ByRef = C.getCaptureKind() == LCK_ByRef;
       LSI->addCapture(VD, /*IsBlock*/false, ByRef, 
-          /*RefersToEnclosingLocal*/true, C.getLocation(),
+          /*RefersToCapturedVariable*/true, C.getLocation(),
           /*EllipsisLoc*/C.isPackExpansion() 
                          ? C.getEllipsisLoc() : SourceLocation(),
           CaptureType, /*Expr*/ nullptr);