K 10 svn:author V 3 jhb K 8 svn:date V 27 2016-07-25T23:38:14.619180Z K 7 svn:log V 460 MFC 302899: Add documentation for the sigevent structure. - Add a sigevent(3) manpage to give a general overview of the sigevent structure and the available notification mechanisms. - Document that AIO requests contain a nested sigevent structure that can be used to request completion notification. - Expand the sigevent details in other manuals to note details such as the extra values stored in a queued signal's information or in a posted kevent. END