[sork] vacation module updated in HEAD

[Eric Rostetter]

For those wanting the vacation module to be in the Driver class/subclass
format, that is now done in CVS HEAD.  Let me know if you find any problems.

There's still a lot of work I want to do on it, but this is a start, and 
sufficient for others to go ahead with for new backends (procmail, etc).

-- 
Eric Rostetter
The Department of Physics
The University of Texas at Austin

"TAD (Technology Attachment Disorder) is an unshakable, impractical devotion
to a brand, platform, product line, or programming language. It's relatively
harmless among the rank and file, but when management is afflicted the damage
can be measured in dollars. It's also contagious -- someone with sufficient
political clout can infect an entire organization."

--"Enterprise Strategies" columnist Tom Yager.