improve message

git-svn-id: https://svn.r-project.org/R/trunk@63280 00db46b3-68df-0310-9c12-caf00c1e9a41
remove the line limit in read.dcf
use separate section in NEWS


git-svn-id: https://svn.r-project.org/R/trunk@63281 00db46b3-68df-0310-9c12-caf00c1e9a41