spktoolbar: for test purposes bring back the timer removed in r3651 (now activated by define DELAYRUNTIMER) because I saw the black areas on a slow computer (having DELAYRUNTIMER activated, however, is not compatible with the previous commit of no background painting -> large black area!) THIS IS AN EXPERIMENTAL VERSION!


git-svn-id: http://svn.code.sf.net/p/lazarus-ccr/svn@3660 8e941d3f-bd1b-0410-a28a-d453659cc2b4