Log Message:
Update www/thin to 0.8.0.  Changes from version 0.7.1 include:

 * Fix server crash when header too large.
 * Add --require (-r) option to require a library before executing your
   script.
 * Rename --rackup short option to -R, warn and load as rackup when file
   ends with .ru.
 * List supported adapters in command usage.
 * Add file adapter to built-in adapter, serve static files in current
   directory.
 * Allow disabling signal handling in Server with :signals => false
 * Make Server.new arguments more flexible, can now specify any of host,
   port, app or hash options.
 * Add --backend option to specified which backend to use.
 * Serve static file only on GET and HEAD requests in Rails adapter.
 * Add threaded option to run server in threaded mode; calling the
   application in a thread allowing for concurrency in the Rack adapter.
 * Guess which adapter to use from directory (chdir option) or use
   specified one in 'adapter' option.