pkgVignettes can now warn if a file looks like a vignette but the VignetteEngine declaration doesn't work.


git-svn-id: https://svn.r-project.org/R/trunk@63915 00db46b3-68df-0310-9c12-caf00c1e9a41
Added iteration macros for implementing vectorized operations with
proper recycling and interrupt check.


git-svn-id: https://svn.r-project.org/R/trunk@63917 00db46b3-68df-0310-9c12-caf00c1e9a41
Use iteration/check macros in basic arithmetic operations.


git-svn-id: https://svn.r-project.org/R/trunk@63918 00db46b3-68df-0310-9c12-caf00c1e9a41
Make texinfo happier.

git-svn-id: https://svn.r-project.org/R/trunk@63919 00db46b3-68df-0310-9c12-caf00c1e9a41