* Optimize kevent() when it is called with a zero timeout.
    (Credit: Eric Wong)



git-svn-id: svn://mark.heily.com/libkqueue/trunk@609 34a59efb-09c4-4dcf-b95f-994a32aba0d8
 * Use ppoll(2) where possible (Credit: Eric Wong)

 * Reenable some additional unit tests



git-svn-id: svn://mark.heily.com/libkqueue/trunk@610 34a59efb-09c4-4dcf-b95f-994a32aba0d8
add changelog

git-svn-id: svn://mark.heily.com/libkqueue/trunk@611 34a59efb-09c4-4dcf-b95f-994a32aba0d8