[PATCH] add command line options to mailer.py

Hello

I attach a patch to implement command line options for smtp servers.

[[[
add command line options to mailer.py

* tools/hook-scripts/mailer/mailer.py
  () : import OptionParser.
  (main) : add options to arguments.
  (PipeOutput.__init__) : call cfg.get_mail_command()
                           to get mail command.
  (Messenger.__init__) : call cfg.get_mail_command() and
                         cfg.get_smtp_hostname() to get
                         target.
  (Config.__init__) : add options to arguments and save it.
  (Config.get_mail_command) : get mail command from command line
                              or config.
  (Config.get_smtp_hostname): get smtp hostname from command line
                              or config.
  (Config.get_smtp_username): get smtp username from command line
                              or config.
  (Config.get_smtp_password): get smtp password from command line
                              or config.
  (setup_option_parser) : create instance of OptionParser.
  (usage) : print usage by using OptionParser.
  (): parse command line by using OptionParser.
]]]

-- 
Masaru Tsuchiyama <m.tmatma_at_gmail.com>