Core/Movement: Add a convenience default ctor to SplineChainResumeInfo, and fix PCH build in some configurations (zzz why do we even keep Appveyor and Travis around).

src/server/game/Scripting/ScriptSystem.h

@@ -6,6 +6,7 @@
 #define SC_SYSTEM_H
 
 #include "ScriptMgr.h"
+#include "SplineChain.h"
 
 #define TEXT_SOURCE_RANGE -1000000                          //the amount of entries each text source has available