Add kbutton.h, fix includes

common/kbutton.h

@@ -0,0 +1,18 @@
+//========= Copyright © 1996-2002, Valve LLC, All rights reserved. ============
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================
+
+#if !defined( KBUTTONH )
+#define KBUTTONH
+#pragma once
+
+typedef struct kbutton_s
+{
+	int		down[2];		// key nums holding it down
+	int		state;			// low bit is down state
+} kbutton_t;
+
+#endif // !KBUTTONH

engine/client/cl_main.c

@@ -19,7 +19,7 @@ GNU General Public License for more details.
 #include "cl_tent.h"
 #include "gl_local.h"
 #include "input.h"
-#include "../cl_dll/kbutton.h"
+#include "kbutton.h"
 #include "vgui_draw.h"
 
 #define MAX_TOTAL_CMDS		32

engine/common/con_utils.c

@@ -16,7 +16,7 @@ GNU General Public License for more details.
 #include "common.h"
 #include "client.h"
 #include "const.h"
-#include "../cl_dll/kbutton.h"
+#include "kbutton.h"
 
 extern convar_t	*con_gamemaps;