Clean up the use of static and anonymous namespaces. This turned up
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
diff --git a/llvm/lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp b/llvm/lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
index b73b0bd..3b10a95 100644
--- a/llvm/lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
+++ b/llvm/lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
@@ -172,6 +172,8 @@
   return LSize < RSize;
 }
 
+namespace {
+
 struct KeyInfo {
   static inline unsigned getEmptyKey() { return -1U; }
   static inline unsigned getTombstoneKey() { return -2U; }
@@ -205,6 +207,8 @@
   unsigned Action;
 };
 
+}
+
 unsigned char* JITDwarfEmitter::EmitExceptionTable(MachineFunction* MF,
                                          unsigned char* StartFunction,
                                          unsigned char* EndFunction) const {