tweak

git-svn-id: https://svn.r-project.org/R/trunk@66767 00db46b3-68df-0310-9c12-caf00c1e9a41
potential speedup, moving INTEGER(.) and REAL(.) out of loops.
related cosmetic


git-svn-id: https://svn.r-project.org/R/trunk@66768 00db46b3-68df-0310-9c12-caf00c1e9a41
bw.SJ(<.., NA>): fixing PR#16024

git-svn-id: https://svn.r-project.org/R/trunk@66769 00db46b3-68df-0310-9c12-caf00c1e9a41
Improve printing refclass generators.

git-svn-id: https://svn.r-project.org/R/trunk@66772 00db46b3-68df-0310-9c12-caf00c1e9a41
generalize unique.default() to automatically work for more S3 classes


git-svn-id: https://svn.r-project.org/R/trunk@66773 00db46b3-68df-0310-9c12-caf00c1e9a41
A couple of not yet used (ifdef`ed), comments, and cosmetics

git-svn-id: https://svn.r-project.org/R/trunk@66774 00db46b3-68df-0310-9c12-caf00c1e9a41
format_perc() factored out of quantile.default()  + an RFC on "export"


git-svn-id: https://svn.r-project.org/R/trunk@66775 00db46b3-68df-0310-9c12-caf00c1e9a41