Fix ruby-ole's FTBFS #634449, please check Git repo.

[Youhei SASAKI <uwabami@gfd-dennou.org>]

Hi, 

I fix ruby-ole's FTBFS and commit whole changes to pkg-ruby-extra's Git repo.

Please check and upload it.
  Vcs-Git: git://git.debian.org/pkg-ruby-extras/ruby-ole.git
  Vcs-Browser: http://git.debian.org/?p=pkg-ruby-extras/ruby-ole.git;a=summary

Best Wishes,
---
Youhei SASAKI <uwabami@gfd-dennou.org>
              <uwabami@debian.or.jp>
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