Update references to linked-buffer.

Closes #2.
Detect b-c-f, a-c-f skew and fix.

The ranges given by b-c-f and a-c-f are not always consistent. This skew
is now detected and fiddled with so that they represent the same region.
This requires expanding the a-c-f region to the maximal change region.
Fixes a bug during deletion.

Previously, the point-min and point-max of that lentic buffer was being
calculated in this lentic buffer which was causing major problems with
deletions.
More linked->lentic renames.
Limit to lentic to allow some support files.

I am using a "noisy-change.el" file to help debug, but
I don't want it to be part of the package.
Automatic skew detection added.

lentic now recognises when b-c-f and a-c-f are not consistent
with each other and autofalls back to entire buffer cloning.
New tests added.
Fixed some accidentally lower casing.
Add autoloads to ignore.
Merge branch 'expt/incremental-whitelist'