Minor rearrangements for readability.
Place the tmp directory under the installation directory by default.
Bugfix:  set the database backend to "text" if DB_File
  is not available.  Thanks to Alasdair Dougall.
(_del_spooled_files): New function: delete any files spooled
  with a token.
(t_expire, t_reject): Call _del_spooled_files.
Add missing paren.
Make formatting adjustments to the output of the showtokens command.
(showtokens)  Use a size correction amount of 0.05 kB, not 0.5 kB.
Add INCLUDE directives and references.
Mention the purge_received setting.
Add INCLUDE directives and references.
Add INCLUDE directives and references.
Add INCLUDE directives and references.
Add a note about template inheritance.
Add INCLUDE directives and references.
Add INCLUDE directives and references
Fix typo.
Add INCLUDE directives and references.
Add INCLUDE directives and references.
Add INCLUDE directives and references.
Add INCLUDE directives and references.
Add INCLUDE directives and help references.