Log Message:
Update ruby-highline package to 1.6.8.

= Change Log

Below is a complete listing of changes for each revision of HighLine.

== 1.6.8

* Fix missing <tt>ERASE_CHAR</tt> reference (by Aaron Gifford).

== 1.6.7

* Fixed bug introduced in 1.6.6 attempted fix (by Aaron Gifford).

== 1.6.6

* Fixed old style references causing <tt>HighLine::String</tt> \ 
errors (by Aaron Gifford).