Increased the default Discworld 2 double-click time from 0.33 seconds to 0.55 seconds (from 6 to 10 frames)

svn-id: r48255

engines/tinsel/config.h

@@ -32,7 +32,7 @@ namespace Tinsel {
 
 // double click timer initial value
 enum {
-	DOUBLE_CLICK_TIME	= 6,	// 6 @ 18Hz = .33 sec
+	DOUBLE_CLICK_TIME	= 10,	// 10 @ 18Hz = .55 sec
 	DEFTEXTSPEED		= 0
 };