Swap ht and dp of scaled box when y-scale (size) is negative (fixes #170)

This matches the behaviour in the LaTeX2e graphics package, and means that
the typset output is inside the bounding box with negative scales.


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4927 de43f980-851b-0410-b2f7-c40aca1f87e0
Update driver test files


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4928 de43f980-851b-0410-b2f7-c40aca1f87e0
Update box test file (uses scalings)


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4929 de43f980-851b-0410-b2f7-c40aca1f87e0