Patch #rdatatable release 1.16.2 on CRAN #rstats

Most importantly we fixed a regression in print() + datatable.prettyprint.char option.

We also
- shipped the .mo translation binaries needed for the 🇪🇸🇫🇷🇧🇷 translations to actually show up
- fixed a segfault in fcase() due to the new default= implementation
- fixed fread() for timestamps with milliseconds

Thanks as ever to @healthandstats for managing the CRAN release process and to Ivan Krylov for some really insightful contributions!