Remove duplication (found by Scott Kostyshak)

git-svn-id: https://svn.r-project.org/R/trunk@63788 00db46b3-68df-0310-9c12-caf00c1e9a41
adapt to new layout

git-svn-id: https://svn.r-project.org/R/trunk@63789 00db46b3-68df-0310-9c12-caf00c1e9a41
Do all of vignette weaving and tangling during R CMD build. 

git-svn-id: https://svn.r-project.org/R/trunk@63792 00db46b3-68df-0310-9c12-caf00c1e9a41
make read/checkNEWS defunct

git-svn-id: https://svn.r-project.org/R/trunk@63794 00db46b3-68df-0310-9c12-caf00c1e9a41
match names we clean up

git-svn-id: https://svn.r-project.org/R/trunk@63795 00db46b3-68df-0310-9c12-caf00c1e9a41
fix alphabetization of widget commands

git-svn-id: https://svn.r-project.org/R/trunk@63797 00db46b3-68df-0310-9c12-caf00c1e9a41
tweak wording

git-svn-id: https://svn.r-project.org/R/trunk@63799 00db46b3-68df-0310-9c12-caf00c1e9a41
report ::: calls

git-svn-id: https://svn.r-project.org/R/trunk@63800 00db46b3-68df-0310-9c12-caf00c1e9a41