Commandline interface for 8.0

This is the outline I have lets get some comments before I really start 
make the changes I'll need.

Current Logwatch:

--print
--mailto
--encode
--output html, mail, unformatted
--save filename

Notes: Because we sort of grew into this configuration it is possible to 
do some pretty odd things. My main goal is to prevent conflicts and make 
it easier to remember.


New Logwatch 8.0:

--output stdout [default], mail
--format text [default], html
--encode
--save [flips output stdout]
--mailto [flips output mail]


Notes: I think output/format combos pretty much covers the basic 
settings, I've left mailto/save since they need options to make them 
work. Using either will force output to be set to the correct setting 
[mail for mailto and stdout for save]. Notice that we lose --print.

Encode is a funny one since in theory you can doing something like 
logwatch --print --output html --encode, yes its odd but I'd rather not 
remove some niche function that someone might use. Plus I think making 
--format text-encode. html-encode is uglier then just --encode, so I'm 
going to leave "encode" outside of the format options [Unless anyone has 
a good argument against this].

Furture Options: [Mostly useless but now is the time to think of this stuff]

In theory if we wanted we could add compression as an option with 
another perl module and the hooks something like --zip of --gzip and the 
output stream would get run through that [it would have to be a mime 
attachment for email but still].

I could also imagine having an --output ftp which would allow the output 
stream to be written to temp file and pushed to an --ftpurl.