Allow multiple registering of the same callback, it just increments the access count and waits for the same number of removes.  This makes it work kind of like a, I want to know access count
Allow multiple registering of the same callback, it just increments the access count and waits for the same number of removes.  This makes it work kind of like a, I want to know access count


git-svn-id: 4705079bc6b8aadf675e3696f5c015a6aa4916e3@1710 3c1deb5b-d424-0410-962d-aba41a686d42

OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc