Log Message:
Update ruby-mysql package to 2.8.1.

pkgsrc change:
	* Add commented out LICENSE (not sure GPL's version).
	* Enable DESTDIR support.

2009-02-01
  version 2.8.1
     * correspond to Ruby 1.9.1

2008-09-29
  version 2.8
  version 2.7.7
     * When connecting to MySQL, EINTR is occurred sometimes ([ruby-dev:31842])
     * MySQL/Ruby 2.7.* can not be compiled on Ruby 1.8.5.