- fixed 3188781 -- eliminate globally initialized objects from WebCore

        * kwq/KWQString.h: Change QChar::null to be a char constant, and QString::null to be a const char *.
        In the cases where the code still compiles after these changes, everything works fine. A few cases
        that didn't compile are fixed below.
        * kwq/KWQString.mm: Remove QString::null.
        (QString::mid): Return QString() instead of null.
        * kwq/KWQChar.mm: Remove the definition of QChar::null.

        * khtml/css/css_base.cpp: (CSSSelector::extractPseudoType): Use DOMString explicitly in one place
        where the code said QString::null. The trick where QString::null is really a const char * does not
        work in this case.
        * khtml/khtml_part.cpp: (KHTMLPart::reparseConfiguration): Use QString() instead of QString::null
        in one place. The trick where QString::null is really a const char * does not work in this case.
        * kwq/KWQKHTMLSettings.h: Use QString() for settingsToCSS, the trick where QString::null is really
        a const char * does not work in this case.
        * khtml/rendering/render_list.cpp: (RenderListMarker::paintObject): Use an isEmpty check here instead
        of comparing with QString::null. Not sure this change was strictly required, but it is simpler and
        may also make the code slightly faster.

        * kwq/KWQKFileDialog.h: Removed. This used QString::null in a way that is incompatible with the new
        "0" hack, but was not used any more.
        * kwq/KWQKFileDialog.mm: Removed.
        * ForwardingHeaders/kfiledialog.h: Empty this out, since there is no KWQKFileDialog.h any more.
        * WebCore.pbproj/project.pbxproj: Removed KWQKFileDialog.h and .mm.

        * khtml/html/htmltokenizer.cpp: Change the commentStart global array to be an array of char instead
        of QChar to avoid the static constructor; the code works fine with char anyway.
        * khtml/html/html_formimpl.cpp: Change the global constants in this file to be char instead of QChar.
        It works this way (and faster for KWQ), and avoids the static constructor.

        * khtml/rendering/bidi.h: Change BidiIterator from a class with constructors into a plain struct.
        The copy construct and assignment operator weren't needed anyway since they simply duplicated default
        assignment, and if we have a constructor then we can't use it as a global object, since we want to
        avoid static constructors. Do the same with BidiStatus, and also stop using bit fields. It's silly to
        use bit fields for something when we have only one global instance of it; just makes extra code size
        and saves a few bytes.
        * khtml/rendering/bidi.cpp:
        (BidiIterator::current): Move the non-breaking space global inside this function.
        (appendRunsForObject): Initialize BidiIterator object using brace notation.
        (buildCompactRuns): Initialize BidiIterator objects using brace notation and assignment.
        (RenderBlock::layoutInlineChildren): Initialize BidiStatus fields separately. Initialize BidiIterator
        objects using brace notation and assignment.
        (RenderBlock::findNextLineBreak): Initialize BidiIterator objects using brace notation and assignment.

        * khtml/rendering/render_frames.cpp: Removed an include of <iostream.h>. This pulled the entire
        C++ I/O library in, with lots of static constructors. Elsewhere, we are careful not to use the C++
        I/O library in WebCore except in Development versions. And this file didn't actually use the library,
        just included the header.

        * kwq/KWQNamespace.h: Remove all the color globals except for the ones used in KHTML: black, white,
        darkGray, gray, and lightGray. And for those, make the globals RGB constants instead of QColor objects.
        This gets rid of the global objects with constructors and works without any KHTML code changes.
        * kwq/KWQColor.mm: Remove the definition of the QColor constants from the Qt class.

        * kwq/KWQPainter.h: Add overloads for setPen and setBrush so they work with the "color" constants
        from Qt that are now RGB constants rather than QColor objects.
        * kwq/KWQPainter.mm:
        (QPainter::setPen): Set style to solid line and width to 0 when the parameter is an RGB constant.
        This is just like what you'd get if you constructed a QPen.
        (QPainter::setBrush): Set style to solid pattern when the parameter is an RGB constant.
        This is just like what you'd get if you constructed a QBrush.

        * khtml/misc/loader.h: Change m_LRULists to be a global pointer instead of a global array, so
        we don't have to statically construct LRUList objects.
        * khtml/misc/loader.cpp: (Cache::getLRUListFor): Allocate the global array the first time we
        pass through here.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@4208 268f45cc-cd09-0410-ab3c-d52691b4dbfc