setenv 45.0 (05.01.01)

- rewrite based on the AROS version of setenv
  (needed some bugfixing). Please note that
  you need to remove the original SetEnv
  via the resident command before you can
  use the update.
  
- added SAVE/S option that tells setenv to 
  save the variable to env: *and* envarc:
  (a feature of dos.library v39). Please
  note that you need to specify the SAVE
  option in front of the STRING option
  (ie "SetEnv the_var SAVE the_contents")!
