[PATCH] Fix for Bug 19480 -- Adding a test case.

[Richard Smith]

================
Comment at: test/CodeGenCXX/cxx1y-variable-template-linkage.cpp:9
@@ +8,3 @@
+// File A
+#ifdef FILEA
+
----------------
Instead of `#ifdef`s, can you merge together the two parts of this file into one? The small amount of the test that differs between the modes can be guarded by

    #if __has_feature(cxx_exceptions)

http://reviews.llvm.org/D4362