[rear-devel] [rear/rear] dcb5ef: Update global-functions.sh

[Johannes Meixner]

  Branch: refs/heads/jsmeix-fix-issue-2667
  Home:   https://github.com/rear/rear
  Commit: dcb5ef3875e4d050c72c180ae9c1165fc1aa4b20
      https://github.com/rear/rear/commit/dcb5ef3875e4d050c72c180ae9c1165fc1aa4b20
  Author: Johannes Meixner <jsmeix at suse.com>
  Date:   2021-09-08 (Wed, 08 Sep 2021)

  Changed paths:
    M usr/share/rear/lib/global-functions.sh

  Log Message:
  -----------
  Update global-functions.sh

Return false if scheme is empty or blank or more than one word
in scheme_supports_filesystem() and also in scheme_accepts_files()
cf. https://github.com/rear/rear/pull/2675#discussion_r704395998