logger: emits debug signal when compiling with MSC

- also adds the signal to the dbus xml in case other clients/platforms
  wish to connect to it in the future

Change-Id: I6d4d85e88e713a7a0ef22ca032653ca5bec188e7

bin/dbus/cx.ring.Ring.ConfigurationManager.xml

@@ -1533,5 +1533,17 @@
                </tp:docstring>
            </arg>
        </signal>
+
+       <signal name="debugMessageReceived" tp:name-for-bindings="debugMessageReceived">
+           <tp:added version="5.2.0"/>
+           <tp:docstring>
+               Notify clients when debug is outputted.
+           </tp:docstring>
+           <arg type="s" name="message">
+               <tp:docstring>
+                   The formatted message to be output.
+               </tp:docstring>
+           </arg>
+       </signal>
    </interface>
 </node>

src/logger.cpp

@@ -265,7 +265,7 @@ Logger::vlog(const int level, const char* file, int line, bool linefeed,
         SetConsoleTextAttribute(hConsole, color_header);
 #endif
         fputs(contextHeader(file, line).c_str(), stderr);
-#ifdef RING_UWP
+#ifdef _MSC_VER
         std::array<char, 4096> tmp;
         vsnprintf(tmp.data(), tmp.size(), format, ap);
         ring::emitSignal<DRing::DebugSignal::MessageSend>(contextHeader(file, line) + tmp.data());