(BlockLevelBox::collapseMarginTop, BlockLevelBox::collapseMarginBottom) : Support the simple case of negative margins.
(BlockLevelBox::collapseMarginTop, BlockLevelBox::collapseMarginBottom) : Support the simple case of negative margins.

git-svn-id: 86dbb1b73ea755ce8c9767cb3be66408d68bb34f@1973 d15c3b8f-5b43-0410-be93-4d5a55ce2954

esrille/escudo,esrille/escudo,esrille/escudo,esrille/escudo,esrille/escudo