Log Message:
Update textproc/ruby-plist to 3.1.0.

* Use lang/ruby/gem.mk instead of misc/rubygems/rubygem.mk.
* Add LICENSE.
* Remove default value of GEM_BUILD.

2010-02-23:
 * Ruby 1.9.x compatibility!

2010-02-16:
 * excise a bunch of unnecessary @@ variables
 * fix up some tests for cross-version compatibility

2010-02-14:
 * generalized cleanup:
   * fix old file headers
   * modernize rakefile
   * clean up rdoc

2010-01-08:
 * move from RubyForge Subversion to GitHub

2007-02-22 (r81):
 * make the plist parser accept strings contain XML or any object that responds \ 
to #read (File and StringIO being the intended targets here).  Test and idea \ 
contributed by Chuck Remes.

2006-09-20 (r80):
 * tweak a comment in generator.rb to make it clear that we're not using \ 
Base64.b64encode because it's broken.