why should just usernames have all the fun :) The "expand_userlist" function
is now "expand_list" and serves generically. The example conf has also been
updated correspondingly
(thanks to SethX for feedback)
- install: a little more verbosity in the mkdir
- install and example conf: some of the help text made more clear
- auth: error message on bad $cmd is now clearer, plus no perl-warnings to
confuse people
