Add back the MC bits of 126425. Original patch by Nathan Jeffords. I added the
asm parsing and testcase.

llvm-svn: 146801
diff --git a/llvm/lib/MC/MCNullStreamer.cpp b/llvm/lib/MC/MCNullStreamer.cpp
index d178b50..ca74663 100644
--- a/llvm/lib/MC/MCNullStreamer.cpp
+++ b/llvm/lib/MC/MCNullStreamer.cpp
@@ -55,6 +55,7 @@
     virtual void EmitCOFFSymbolStorageClass(int StorageClass) {}
     virtual void EmitCOFFSymbolType(int Type) {}
     virtual void EndCOFFSymbolDef() {}
+    virtual void EmitCOFFSecRel32(MCSymbol const *Symbol) {}
 
     virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
     virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,