gnu: r: Do not build recommended packages.

* gnu/packages/statistics.scm (r)[arguments]: Rename phase
"build-recommended-packages-reproducibly" to "build-reproducibly"; add
configure flag "--without-recommended-packages".
* guix/import/cran.scm (default-r-packages): Remove recommended packages.
* gnu/packages/python.scm (python-rpy2)[inputs]: Add r-survival.
* gnu/packages/bioinformatics.scm (r-ape)[propagated-inputs]: Add r-lattice
and r-nlme.
(r-vegan)[propagated-inputs]: Add r-mass.
(r-genefilter)[propagated-inputs]: Add r-survival.
(r-grohmm)[propagated-inputs]: Add r-mass.
(r-bioccheck)[propagated-inputs]: Add r-codetools.
(r-summarizedexperiment)[propagated-inputs]: Add r-matrix.
(r-topgo)[propagated-inputs]: Add r-lattice.
(r-sva)[propagated-inputs]: Add r-mgcv.
(r-raremetals2)[propagated-inputs]: Add r-mass.
(r-vsn)[propagated-inputs]: Add r-lattice.
(r-pcamethods)[propagated-inputs]: Add r-mass.
* gnu/packages/bioinformatics.scm (r-ggplot2)[propagated-inputs]: Add r-mass.
(r-locfit)[propagated-inputs]: Add r-lattice.
(r-coda)[propagated-inputs]: Add r-lattice.
(r-irlba)[propagated-inputs]: Add r-matrix.
(r-glmnet)[propagated-inputs]: Add r-matrix.
(r-e1071)[propagated-inputs]: Add r-class.
(r-spams)[propagated-inputs]: Add r-lattice and r-matrix.
(r-hmisc)[propagated-inputs]: Add r-cluster, r-foreign, r-lattice, r-nnet, and
r-rpart.
(r-zoo)[propagated-inputs]: Add r-lattice.
(r-mixtools)[propagated-inputs]: Add r-boot and r-mass.
(r-flexmix)[propagated-inputs]: Add r-lattice and r-nnet.
(r-prabclus)[propagated-inputs]: Add r-mass.
(r-fpc)[propagated-inputs]: Add r-class, r-cluster, and r-mass.
(r-rcppeigen)[propagated-inputs]: Add r-matrix.
(r-matrixmodels)[propagated-inputs]: Add r-matrix.
(r-lme4)[propagated-inputs]: Add r-mass and r-nlme.
(r-pbkrtest)[propagated-inputs]: Add r-mass and r-matrix.
(r-car)[propagated-inputs]: Add r-mass, r-mgcv, and r-nnet.
(r-tclust)[propagated-inputs]: Add r-cluster.