state explicitly that re-encoding needs to be possible

git-svn-id: https://svn.r-project.org/R/trunk@63066 00db46b3-68df-0310-9c12-caf00c1e9a41
texinfo 4.x seems to need this conditionalized

git-svn-id: https://svn.r-project.org/R/trunk@63068 00db46b3-68df-0310-9c12-caf00c1e9a41
mention online location for manual

git-svn-id: https://svn.r-project.org/R/trunk@63069 00db46b3-68df-0310-9c12-caf00c1e9a41