Add __has_feature(cxx_range_for) check for C++11 range-based for loop.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129573 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPMacroExpansion.cpp b/lib/Lex/PPMacroExpansion.cpp
index 6e9f598..b078bc8 100644
--- a/lib/Lex/PPMacroExpansion.cpp
+++ b/lib/Lex/PPMacroExpansion.cpp
@@ -565,6 +565,7 @@
            .Case("cxx_noexcept", LangOpts.CPlusPlus0x)
          //.Case("cxx_nullptr", false)
            .Case("cxx_override_control", LangOpts.CPlusPlus0x)
+           .Case("cxx_range_for", LangOpts.CPlusPlus0x)
            .Case("cxx_reference_qualified_functions", LangOpts.CPlusPlus0x)
            .Case("cxx_rvalue_references", LangOpts.CPlusPlus0x)
            .Case("cxx_strong_enums", LangOpts.CPlusPlus0x)