New mode for Unequal, from James H. In this mode, called 'Adjacent',

New mode for Unequal, from James H. In this mode, called 'Adjacent',
the < and > clues are replaced by bars separating every pair of
squares whose contents differ by exactly 1. Unlike standard Unequal,
which presents only a subset of the available clues, in Adjacent the
clues are _all_ present, so you can deduce from the absence of a bar
that the two numbers it would separate are _not_ consecutive.

git-svn-id: svn://svn.tartarus.org/sgt/puzzles@8790 cda61777-01e9-0310-a592-d414129be87e