[OPENMP] Updated comments and _OPENMP macro value for OpenMP 4.0 (for 'omp simd' support)

llvm-svn: 203114
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 1112b55..ca51297b 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -720,12 +720,12 @@
 
   // OpenMP definition
   if (LangOpts.OpenMP) {
-    // OpenMP 2.2: 
+    // OpenMP 2.2:
     //   In implementations that support a preprocessor, the _OPENMP
     //   macro name is defined to have the decimal value yyyymm where
     //   yyyy and mm are the year and the month designations of the
     //   version of the OpenMP API that the implementation support.
-    Builder.defineMacro("_OPENMP", "201107");
+    Builder.defineMacro("_OPENMP", "201307");
   }
 
   // Get other target #defines.