REVIEW: update for www/rubygem-mechanize to 2.3

[MIHIRA Sanpei Yoshiro]

Hi all,

I updated www/rubygem-mechanize to 2.3 and created some ports.

  updated ports:
	www/rubygem-mechanize from 1.0.0 to 2.3
  new ports:
        net/rubygem-domain_name
	textproc/rubygem-unf
	textproc/rubygem-unf_ext
	www/rubygem-ntlm-http

http://www.freebsd.org/~sanpei/www-rubygem-mechanize-20120331.tar.gz

I will commit above files tomorrow if portmgr allow to commit.
If you have any comments, please let me to know.

Yours
Yoshiro MIHIRA
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MIHIRA, Sanpei Yoshiro
Tokyo, Japan.