This patch changes the behaviour so that if the environment contains more
than one line it will be expanded in the right way. (However, it probably
needs to be improved since it doesn't care about `"' and `'' correctly). If
you, for example, have inbox-folders set to $ALLINBOXES and ALLINBOXES set
in .profile to 'NAME1 inbox1, NAME2 inbox2' it will be expanded into two
inboxes instead of one as it was earlier.

  Written by: Emil Isberg <cel95eig@mds.mdh.se>