[Rd] news.Rd format

[Terry Therneau]

  I'm converting the "Changelog" files that I have used in the survival package
(since the 1980s) to the inst/NEWS.Rd format and a couple of things are not 
clear from the help page.
  1. What should I use for the name: NEWS or survival?
  2. My section headers look like
    \section{Changes in version 2.36-3}{
      \itemize{  
  etc
and I get "cannot extract version info from the following section titles" for all of them.  I must be missing something simple.

  Perhaps these two points could be clarified further in the manual page.

Terry Therneau