accept msvc_sink on all compilers, add name windebug_sink (fixes #554)

include/spdlog/sinks/msvc_sink.h

@@ -5,12 +5,12 @@
 
 #pragma once
 
-#if defined(_MSC_VER)
+#if defined(_WIN32)
 
 #include "base_sink.h"
 #include "../details/null_mutex.h"
 
-#include <WinBase.h>
+#include <winbase.h>
 
 #include <mutex>
 #include <string>

include/spdlog/sinks/windebug_sink.h

@@ -0,0 +1,29 @@
+//
+// Copyright(c) 2017 Alexander Dalshov.
+// Distributed under the MIT License (http://opensource.org/licenses/MIT)
+//
+
+#pragma once
+
+#if defined(_WIN32)
+
+#include "msvc_sink.h"
+
+namespace spdlog
+{
+namespace sinks
+{
+
+/*
+* Windows debug sink (logging using OutputDebugStringA, synonym for msvc_sink)
+*/
+template<class Mutex>
+using windebug_sink = msvc_sink<Mutex>;
+
+typedef msvc_sink_mt windebug_sink_mt;
+typedef msvc_sink_st windebug_sink_st;
+
+}
+}
+
+#endif