[mapserver-dev] msTransformShapeAGG vs. msTransformShape

[Steve Lime]

This is probably mostly for Thomas. Anyone recall why msTransformShapeAGG exists (and isn't the standard)? I've
noticed changes between 4.10, 5.2 and now 5.4 when drawing small polygons. Here's a summary:

  - 4.10 is ok and is obviously pre-AGG
  - 5.0/5.2 some small polygons render but won't label in GD, ok in AGG
  - 5.4 some small polygons don't render or label in GD, ok in AGG

The differences are because of changes in msTransformShape between 4.10 and 5.0 I believe. Probably as a result of 
the initial addition of AGG. The msTransformShapeAGG() seems to function fine and I'm wondering why we don't just use
it everywhere. I don't see anything in the function that seems to be AGG specific.

Steve