Reviewed by Kevin.

    Reviewed by Kevin.

	- remove more isFirst/isLast functions and use isStart/isEnd verions instead

        * khtml/editing/htmlediting.cpp:
        (khtml::DeleteSelectionCommand::initializePositionData):
        (khtml::InsertParagraphSeparatorCommand::calculateStyleBeforeInsertion):
        (khtml::InsertTextCommand::input):
        (khtml::ReplaceSelectionCommand::doApply):
        (khtml::ReplaceSelectionCommand::removeLinePlaceholderIfNeeded):
        * khtml/editing/visible_position.cpp:
        (khtml::VisiblePosition::previous):
        (khtml::setAffinityUsingLinePosition):
        (khtml::isFirstVisiblePositionInNode):
        * khtml/editing/visible_position.h:
        * khtml/editing/visible_units.cpp:
        (khtml::endOfLine):
        (khtml::previousLinePosition):
        * khtml/xml/dom_position.cpp:
        (DOM::Position::previousCharacterPosition):
        (DOM::Position::nextCharacterPosition):
        * kwq/WebCoreBridge.mm:
        (-[WebCoreBridge smartInsertForString:replacingRange:beforeString:afterString:]):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@9149 268f45cc-cd09-0410-ab3c-d52691b4dbfc