update + note for PR#14977


git-svn-id: https://svn.r-project.org/R/trunk@66835 00db46b3-68df-0310-9c12-caf00c1e9a41
typo


git-svn-id: https://svn.r-project.org/R/trunk@66836 00db46b3-68df-0310-9c12-caf00c1e9a41
as.dendrogram.hclust(..., check=TRUE) proctects against invalid "merge"

git-svn-id: https://svn.r-project.org/R/trunk@66839 00db46b3-68df-0310-9c12-caf00c1e9a41
confine veclib_g95fix to where Accelerate or vecLib is specified

git-svn-id: https://svn.r-project.org/R/trunk@66840 00db46b3-68df-0310-9c12-caf00c1e9a41