Add some more polish to ensure the ypos estimate is right. Correct the clearing...

	Add some more polish to ensure the ypos estimate is right.  Correct the clearing of images so that
	their top margins do not get added in when they clear the float because of having a large width.

        Reviewed by kocienda

        * khtml/rendering/render_block.cpp:
        (khtml::RenderBlock::layoutBlockChildren):
        * layout-tests/fast/block/margin-collapse/101-expected.txt: Added.
        * layout-tests/fast/block/margin-collapse/101.html: Added.
        * layout-tests/fast/block/margin-collapse/102-expected.txt: Added.
        * layout-tests/fast/block/margin-collapse/102.html: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@6078 268f45cc-cd09-0410-ab3c-d52691b4dbfc