Ideally if a component is focusable, than mouse click on it should bring focus border over it
But clicking on selected Tab in JTabbedPane doesn't bring focus border over it in all the
java L&Fs while if you compare with some of the native behaviour, say win XP than this is not the
case.

Steps to reproduce:
1) Open SwingSet2(Keep default Java L&F & Ocean theme)
2) Go to JTabbedPane demo
3) You should see a selected tab "Laine"
4) Now click on the "Laine" tab and note it will not bring
   any focus border, Now if you click on someother neighbouring tab and click
   "Laine" back, than you will see a focus border over it.

Reproducible in all L&F including windows.

###@###.### 2004-03-23