get rid of psql welcome message

Around <http://archives.postgresql.org/pgsql-patches/2008-01/msg00089.php> it 
was proposed to truncate the psql welcome screen.  What do you think about 
that?

Personally, I'd get rid of it all, because it gets boring after about three 
uses, so that we would be at

peter@colt:~$ psql testdb
testdb=#

The version mismatch warning would remain, of course.

I'd also like to get rid of the SSL notice but I'm not sure what to replace it 
by.  Something in the prompt perhaps?

Btw., any user could put the welcome message in his own psqlrc file via \echo 
commands in case they are really attached to it.