Tiny patch which removes username and password from the logs

The logs log out the entire remote, including the couchdb username and password if any ie:

 TDPusher[http://adminuser:supersecretpassswordnotsosecretanymore@yourcouch.iriscouch.com/yourdb] STARTING ...

now:

 02-19 21:34:07.480: V/TDDatabase(2325): TDPusher[http://---:---@yourcouch.iriscouch.com/yourdb] STARTING ...