Improve client input responsiveness

Move sampling input to the other side of framerate limiter.

Thanks to Alexander "wareya" Nadeau and Juraj "youurayy" Vitko for
pointing this out.

code/qcommon/common.c

@@ -3162,6 +3162,8 @@ void Com_Frame( void ) {
 			NET_Sleep(timeVal - 1);
 	} while(Com_TimeVal(minMsec));
 	
+	IN_Frame();
+
 	lastTime = com_frameTime;
 	com_frameTime = Com_EventLoop();
 	

code/qcommon/qcommon.h

@@ -1058,6 +1058,14 @@ int SV_SendQueuedPackets(void);
 qboolean UI_GameCommand( void );
 qboolean UI_usesUniqueCDKey(void);
 
+//
+// input interface
+//
+void IN_Init( void *windowData );
+void IN_Frame( void );
+void IN_Shutdown( void );
+void IN_Restart( void );
+
 /*
 ==============================================================
 

code/sys/sys_main.c

@@ -756,7 +756,6 @@ int main( int argc, char **argv )
 
 	while( 1 )
 	{
-		IN_Frame( );
 		Com_Frame( );
 	}