test also against R-devel
add rdev PPA before bootstrapping
tests are done only in devel, CRAN checks are done for both stable and devel
test also on R-stable; compile R-devel from source
bugfix
configure
configure args
use svn export instead of git clone per https://github.com/wch/r-source/wiki#building-r-from-source
co instead of export
install imagemagick for integration tests; require LaTeX to build R from source
quiet checkout
imagemagick -> graphicsmagick
don't do binary install for R packages when testing R-devel
reorder, again
simplify
bugfix
helpful warnings for missing utilities
install imagemagick
bugfix
can install only imagemagick