Improve documentation for lib/logbuf.Flush().
Improve documentation for lib/logbuf.Flush().

Symantec/Dominator,keep94/Dominator,keep94/Dominator,rgooch/Dominator,keep94/Dominator,Symantec/Dominator,Symantec/Dominator,rgooch/Dominator,rgooch/Dominator