Fixes #18, by never allowing a negative wait time when postponing a timer callback execution.
Fixes #18, by never allowing a negative wait time when postponing a timer callback execution.


git-svn-id: aaa9712ceb55dedb2b67b3d07ba1fa4dec5bedc3@121 352c818e-eda7-11de-bf31-4dec8810c1c1

highlyunavailable/ncron,schourode/ncron