Tweaks to make Windows happy again hopefully

CInterface/Core.cpp

@@ -4,8 +4,6 @@
 std::string ExceptionHandler::_ArbutilsLastException = "";
 export const char* Arbutils_C_GetLastException() { return ExceptionHandler::GetLastException(); }
 
-#if !WINDOWS
 static ArbUt::SignalHandling sh;
 export void Arbutils_C_SetSignalCallback(void (*callback)(const char*)) { sh = ArbUt::SignalHandling(callback); }
 export void Arbutils_C_RaiseSignal() { raise(SIGSEGV); }
-#endif

src/SignalHandling.hpp

@@ -1,11 +1,9 @@
 #ifndef ARBUTILS_SIGNALHANDLING_HPP
 #define ARBUTILS_SIGNALHANDLING_HPP
-#if !WINDOWS
-#if PRETTYTRACES
+#if PRETTYTRACES && !WINDOWS
 #define BACKWARD_HAS_DW 1
 #endif
 #include "../extern/backward.hpp"
-#endif
 
 #include "Exception.hpp"