Fix build breakage from r329201

Some compilers do not like having an enum type and a variable with the
same name (AccelTableKind). I rename the variable to TheAccelTableKind.

Suggestions for a better name welcome.

llvm-svn: 329202
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index b1703e9..bd248fd 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -278,7 +278,7 @@
 
   /// DWARF5 Experimental Options
   /// @{
-  AccelTableKind AccelTableKind;
+  AccelTableKind TheAccelTableKind;
   bool HasAppleExtensionAttributes;
   bool HasSplitDwarf;
 
@@ -536,7 +536,7 @@
   // Experimental DWARF5 features.
 
   /// Returns what kind (if any) of accelerator tables to emit.
-  llvm::AccelTableKind getAccelTableKind() const { return AccelTableKind; }
+  AccelTableKind getAccelTableKind() const { return TheAccelTableKind; }
 
   bool useAppleExtensionAttributes() const {
     return HasAppleExtensionAttributes;