Log Message:
Update ruby-highline to 1.5.2.
based on package by @anyakichi via twiter.

== 1.5.2

* Added support for using the ffi-ncurses gem which is supported in JRuby.
* Added gem build instructions.

== 1.5.1

* Fixed the long standing echo true bug.
  (reported by Lauri Tuominen)
* Improved Windows API calls to support the redirection of STDIN.
  (patch by Aaron Simmons)
* Updated gem specification to avoid a deprecated call.
* Made a minor documentation clarification about character mode support.
* Worked around some API changes in Ruby's standard library in Ruby 1.9.
  (patch by Jake Benilov)

== 1.5.0

* Fixed a bug that would prevent Readline from showing all completions.
  (reported by Yaohan Chen)
* Added the ability to pass a block to HighLine#agree().
  (patch by Yaohan Chen)