[Rcpp-devel] Sample function(s) for inclusion in RcppArmadillo

        #include <extensions/sample.h>
which is not expressive enough. I think we should go for something like boost
where we have to do
        #include <RcppArmadillo/extensions/sample.h>
but that would require a directory
        (inst)/include/RcppArmadillo/RcppArmadillo/extensions/sample.h

which reads silly.   Hm.
Better suggestions, anyone?