cleaned up lots of not-so-niceties and a few bugs

I built everything with clang (hackishly in some areas) and it spit out a bunch
of warnings.
diff --git a/aos/common/queue_testutils.cc b/aos/common/queue_testutils.cc
index 8d195c5..5455859 100644
--- a/aos/common/queue_testutils.cc
+++ b/aos/common/queue_testutils.cc
@@ -49,6 +49,7 @@
     return new TestLogImplementation();
   }
 
+  __attribute__((format(GOOD_PRINTF_FORMAT_TYPE, 3, 0)))
   virtual void DoLog(log_level level, const char *format, va_list ap) {
     LogMessage message;