Rework block layout to clean it up and simplify it (r=kocienda).

	Rework block layout to clean it up and simplify it (r=kocienda).

	Also fixing the style sharing bug (r=mjs).

        * khtml/rendering/render_block.cpp:
        (khtml::RenderBlock::MarginInfo::MarginInfo):
        (khtml::RenderBlock::layoutBlock):
        (khtml::RenderBlock::adjustPositionedBlock):
        (khtml::RenderBlock::adjustFloatingBlock):
        (khtml::RenderBlock::handleSpecialChild):
        (khtml::RenderBlock::handleFloatingOrPositionedChild):
        (khtml::RenderBlock::handleCompactChild):
        (khtml::RenderBlock::insertCompactIfNeeded):
        (khtml::RenderBlock::handleRunInChild):
        (khtml::RenderBlock::collapseMargins):
        (khtml::RenderBlock::clearFloatsIfNeeded):
        (khtml::RenderBlock::estimateVerticalPosition):
        (khtml::RenderBlock::determineHorizontalPosition):
        (khtml::RenderBlock::setCollapsedBottomMargin):
        (khtml::RenderBlock::adjustChildIfOverhangingFloatsExist):
        (khtml::RenderBlock::handleBottomOfBlock):
        (khtml::RenderBlock::layoutBlockChildren):
        (khtml::RenderBlock::getAbsoluteRepaintRectIncludingFloats):
        (khtml::RenderBlock::addOverHangingFloats):
        * khtml/rendering/render_block.h:
        (khtml::RenderBlock::maxTopMargin):
        (khtml::RenderBlock::maxBottomMargin):
        (khtml::RenderBlock::CompactInfo::compact):
        (khtml::RenderBlock::CompactInfo::block):
        (khtml::RenderBlock::CompactInfo::matches):
        (khtml::RenderBlock::CompactInfo::clear):
        (khtml::RenderBlock::CompactInfo::set):
        (khtml::RenderBlock::CompactInfo::CompactInfo):
        (khtml::RenderBlock::MarginInfo::setAtTopOfBlock):
        (khtml::RenderBlock::MarginInfo::setAtBottomOfBlock):
        (khtml::RenderBlock::MarginInfo::clearMargin):
        (khtml::RenderBlock::MarginInfo::setSelfCollapsingBlockClearedFloat):
        (khtml::RenderBlock::MarginInfo::setTopQuirk):
        (khtml::RenderBlock::MarginInfo::setBottomQuirk):
        (khtml::RenderBlock::MarginInfo::setDeterminedTopQuirk):
        (khtml::RenderBlock::MarginInfo::setPosMargin):
        (khtml::RenderBlock::MarginInfo::setNegMargin):
        (khtml::RenderBlock::MarginInfo::setPosMarginIfLarger):
        (khtml::RenderBlock::MarginInfo::setNegMarginIfLarger):
        (khtml::RenderBlock::MarginInfo::setMargin):
        (khtml::RenderBlock::MarginInfo::atTopOfBlock):
        (khtml::RenderBlock::MarginInfo::canCollapseWithTop):
        (khtml::RenderBlock::MarginInfo::canCollapseWithBottom):
        (khtml::RenderBlock::MarginInfo::canCollapseTopWithChildren):
        (khtml::RenderBlock::MarginInfo::canCollapseBottomWithChildren):
        (khtml::RenderBlock::MarginInfo::selfCollapsingBlockClearedFloat):
        (khtml::RenderBlock::MarginInfo::quirkContainer):
        (khtml::RenderBlock::MarginInfo::determinedTopQuirk):
        (khtml::RenderBlock::MarginInfo::topQuirk):
        (khtml::RenderBlock::MarginInfo::bottomQuirk):
        (khtml::RenderBlock::MarginInfo::posMargin):
        (khtml::RenderBlock::MarginInfo::negMargin):
        (khtml::RenderBlock::MarginInfo::margin):
        * khtml/rendering/render_box.cpp:
        (RenderBox::calcAbsoluteVertical):
        * khtml/rendering/render_box.h:
        (khtml::RenderBox::marginTop):
        (khtml::RenderBox::marginBottom):
        (khtml::RenderBox::marginLeft):
        (khtml::RenderBox::marginRight):
        * khtml/rendering/render_image.cpp:
        (RenderImage::setImage):
        * khtml/rendering/render_object.cpp:
        (RenderObject::sizesToMaxWidth):
        * khtml/rendering/render_object.h:
        (khtml::RenderObject::collapsedMarginTop):
        (khtml::RenderObject::collapsedMarginBottom):
        (khtml::RenderObject::maxTopMargin):
        (khtml::RenderObject::maxBottomMargin):
        (khtml::RenderObject::marginTop):
        (khtml::RenderObject::marginBottom):
        (khtml::RenderObject::marginLeft):
        (khtml::RenderObject::marginRight):
        * khtml/rendering/render_text.h:
        (khtml::RenderText::marginLeft):
        (khtml::RenderText::marginRight):
        * khtml/xml/dom_elementimpl.cpp:
        (ElementImpl::recalcStyle):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@7824 268f45cc-cd09-0410-ab3c-d52691b4dbfc