Reviewed by darin
        
        <rdar://problem/5091898> REGRESSION: GMail Editor: A line of underlined text copied with Select All pastes with wrong font family

        Demonstrates the bug fixed:
        * editing/style/5091898-expected.checksum: Added.
        * editing/style/5091898-expected.png: Added.
        * editing/style/5091898-expected.txt: Added.
        * editing/style/5091898.html: Added.
        Demonstrates a related bug fixed (deleting
        the line break before a paragraph could remove
        its underlining):
        * editing/deleting/5091898-expected.checksum: Added.
        * editing/deleting/5091898-expected.png: Added.
        * editing/deleting/5091898-expected.txt: Added.
        * editing/deleting/5091898.html: Added.
        Demonstrates that a link now (correctly) exists, 
        instead of just underlined text:
        * editing/pasteboard/4840662-expected.txt:

WebCore:

        Reviewed by darin
        
        <rdar://problem/5091898> REGRESSION: GMail Editor: A line of underlined text copied with Select All pastes with wrong font family
        
        createMarkup skipped elements if they were blocks
        when called from moveParagraphs (because that function 
        must receive only inline content).  This patch adds 
        code to inline these blocks instead of skipping them 
        so that we don't lose any of the style that they 
        contribute to the copied markup.

        * editing/markup.cpp:
        (WebCore::startMarkup): Add an inlineBlocks option.
        Make sure to overwrite display:block coming from
        a style sheet or the inline style declaration.
        (WebCore::createMarkup): Don't refuse to include a 
        specialCommonAncestor that's a block if we were asked 
        to include only inline content, since we can now inline 
        block elements in startMarkup.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@20542 268f45cc-cd09-0410-ab3c-d52691b4dbfc