Log Message:
Update ruby-mime-type package to 1.17.2.

== MIME::Types 1.17.2 / 2011-10-25
* Bug Fixes:
  * Fixed an issue with Ruby 1.9 and file encoding.

== MIME::Types 1.17.1 / 2011-10-23
* Minor Enhancements:
  * Implemented modern 'hoe' semantics.
  * Switched to minitest instead of test/unit.
  * Converted documentation from .txt to .rdoc.
  * Removed setup.rb. (Issue #3:
    https://github.com/halostatue/mime-types/issues/3).
  * Should no longer complain about missing RubyGems keys (Issue #2:
    https://github.com/halostatue/mime-types/issues/2).
  * Added .mp4 and .mpg4 as recognized extensions for
    {application,audio,video}/mp4 per RFC4337. (Issue #1:
    https://github.com/halostatue/mime-types/issues/1).
  * Added audio/x-aac and .aac per RubyForge issue #28054
    \ 
(http://rubyforge.org/tracker/index.php?func=detail&aid=28054&group_id=293&atid=1194).
  * Made it much easier to update MIME types from this point forward.
  * Updated MIME types from IANA.