MC: Add target hook to control symbol quoting

llvm-svn: 239370
diff --git a/llvm/lib/MC/MCAssembler.cpp b/llvm/lib/MC/MCAssembler.cpp
index 51f05b7..55f5009 100644
--- a/llvm/lib/MC/MCAssembler.cpp
+++ b/llvm/lib/MC/MCAssembler.cpp
@@ -1199,8 +1199,7 @@
   case MCFragment::FT_SafeSEH: {
     const MCSafeSEHFragment *F = cast<MCSafeSEHFragment>(this);
     OS << "\n       ";
-    OS << " Sym:";
-    F->getSymbol()->print(OS);
+    OS << " Sym:" << F->getSymbol();
     break;
   }
   }