Reviewed by Ken.

    Reviewed by Ken.

        - use <p> elements rather than <br> when pasting plain text; also use margin of 0 rather than 0.1 em
          after talking this over with Dave and Ken

        * khtml/editing/htmlediting.h: Added createDefaultParagraphElement and createBlockPlaceholderElement.
        * khtml/editing/htmlediting.cpp:
        (khtml::CompositeEditCommand::insertBlockPlaceholderIfNeeded): Use new createBlockPlaceholderElement
        helper so this can share code with the plain-text conversion code.
        (khtml::InsertParagraphSeparatorCommand::createParagraphElement): Use new createDefaultParagraphElement
        helper so this can share code with the plain-text conversion code.
        (khtml::createDefaultParagraphElement): Added.
        (khtml::createBlockPlaceholderElement): Added.

        * khtml/editing/markup.cpp: (khtml::createFragmentFromText): Use paragraphs rather than
        <br> elements for pasting plain text.

        - regenerated these files with the newer gperf

        * khtml/css/cssproperties.c: Regenerated.
        * khtml/css/cssvalues.c: Regenerated.
        * khtml/misc/htmlattrs.c: Regenerated.
        * khtml/misc/htmltags.c: Regenerated.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8229 268f45cc-cd09-0410-ab3c-d52691b4dbfc