[PATCH] [libcxx] Update the way the -std= flag is chosen by CMake and LibcxxTestFormat

[Dan Albert]

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Comment at: CMakeLists.txt:193
@@ +192,3 @@
+  endif()
+  if (DEFINED LIBCXX_STD_VERSION)
+    list(APPEND LIBCXX_CXX_REQUIRED_FLAGS -std=${LIBCXX_STD_VERSION})
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Should the else case be an error? Can libc++ be compiled with less than c++0x?

http://reviews.llvm.org/D4329