Fixed Clip regarding auto raise/lower and autocollapse behavior.

Also rewrote that part of code to be much cleaner.

src/dock.h

@@ -43,6 +43,7 @@ typedef struct WDock {
 #define EXTENDED_DOCK  WM_CLIP
     int type;
 
+    WMagicNumber auto_expand_magic;
     WMagicNumber auto_collapse_magic;
     WMagicNumber auto_raise_magic;
     WMagicNumber auto_lower_magic;