Cleanup various headers to reduce compilation times (#6255)

* Cleanup various headers to reduce compilation times

src/client/inputhandler.h

@@ -247,8 +247,8 @@ public:
 		}
 
 		return m_mousepos;
-
 	}
+
 	virtual void setMousePos(s32 x, s32 y)
 	{
 		if (RenderingEngine::get_raw_device()->getCursorControl()) {

src/client/renderingengine.cpp

@@ -21,10 +21,12 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <IrrlichtDevice.h>
 #include <irrlicht.h>
 #include "fontengine.h"
+#include "client.h"
 #include "clouds.h"
 #include "util/numeric.h"
 #include "guiscalingfilter.h"
 #include "hud.h"
+#include "localplayer.h"
 #include "camera.h"
 #include "minimap.h"
 #include "clientmap.h"