Rename LOG_NONE which conflicts with a name in mysql

src/butil/logging.h

@@ -212,7 +212,7 @@ typedef char PathChar;
 // Where to record logging output? A flat file and/or system debug log
 // via OutputDebugString.
 enum LoggingDestination {
-    LOG_NONE                = 0,
+    LOG_TO_NONE             = 0,
     LOG_TO_FILE             = 1 << 0,
     LOG_TO_SYSTEM_DEBUG_LOG = 1 << 1,