In the upgrade from ruby 1.8.6 to 1.8.7, the PLISTs changed
due to differences in how RDoc processes files.
This also has a number of changes to the regress tests to
work with the changes to devel/ruby-rake. It moves most of
the regress tests to use MODRUBY_REGRESS.
OK jcs@, landry@, jasper@, sthen@
Diff::LCS is a port of Algorithm::Diff that uses the McIlroy-Hunt
longest common subsequence (LCS) algorithm to compute intelligent
differences between two sequenced enumerable containers.
The implementation is based on Mario I. Wolczko's Smalltalk version
(1.2,1993) and Ned Konz's Perl version (Algorithm::Diff).