As written in the review request:

There are 2 reasons for this change:

 1. It increases the way the name describes what it actually is
    for. There are many places in the code that looks like:
      KoShapeBorderModel *stroke = ...
    so naming it "...Stroke..." is both closer to the odf tags and
    also to the rest of the code.
 2. It reduces the confusion between KoShapeBorderModel and KoBorder
    which don't have anything to do with each other.

REVIEW: 104405