[PATCH] Enable StackMap Serialization for COFF

[Sanjoy Das]

LGTM -- I'll trust you got the flags for the COFF section right.


================
Comment at: lib/MC/MCObjectFileInfo.cpp:737
@@ +736,3 @@
+	  
+  StackMapSection = Ctx->getCOFFSection(
+    ".llvm_stackmaps", 
----------------
The formatting looks a little bit off here -- can you please run this change through `clang-format`?

http://reviews.llvm.org/D10680

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