Update sasl.appup.src with R16 release and remove R13 versions
si_sasl_supp: Eliminate use of tuple fun
[sasl] Adapt release handling mechanisms to unicode

* Update systool_lib:read_term/1 to honour magic encoding comment in file.

* Add unicode option to re:compile and re:run when appropriate,
  allowing e.g. unicode filenames.

* systools_make to allow unicode strings in .rel and .app files
[sasl] Add unicode test for systools:make_script
Update copyright years
Prepare release