Merge #13964: ci: Add Appveyor CI

1f6ff04e59 Use wildcard path in test_bitcoin.vcxproj (Chun Kuan Lee)
90cc69c0c7 ci: Add appveyor.yml to build on MSVC (Chun Kuan Lee)
4d0c7924d2 Make macro compatible with MSVC (Chun Kuan Lee)

Pull request description:

  Introduce Appveyor CI for MSVC. This would require the owner adding appveyor to this repo. Also fix some MSVC incompatible code.

  This `appveyor.yml` file is modified from @sipsorcery and @NicolasDorier 's code in #12613.

  Appveyor CI result: https://ci.appveyor.com/project/ken2812221/bitcoin/build/1.0.151

Tree-SHA512: b5b0f1686a33e54325ea6de81606806a7d9a0f8d4acbb97c9ce598386e8fcb2220def264777609ed2b850ac8c490fd181303ea522c5a70487272d46995f4c52d

src/ui_interface.h

@@ -75,9 +75,9 @@ public:
         MSG_ERROR = (ICON_ERROR | BTN_OK | MODAL)
     };
 
-#define ADD_SIGNALS_DECL_WRAPPER(signal_name, rtype, args...)                              \
-    rtype signal_name(args);                                                               \
-    using signal_name##Sig = rtype(args);                                                  \
+#define ADD_SIGNALS_DECL_WRAPPER(signal_name, rtype, ...)                                  \
+    rtype signal_name(__VA_ARGS__);                                                        \
+    using signal_name##Sig = rtype(__VA_ARGS__);                                           \
     boost::signals2::connection signal_name##_connect(std::function<signal_name##Sig> fn); \
     void signal_name##_disconnect(std::function<signal_name##Sig> fn);