- fixed 2936933 -- Pages that claim to be UTF-8 but contain invalid
	sequences do not render at all

	Misc. speed improvements. Total 2.6% speedup for cvs-base.

	Improvements for signals.

        * kwq/KWQChar.mm:
        (QChar::isSpace): Add fast case for ASCII.
        (QChar::lower): Add fast case for ASCII.
        (QChar::upper): Add fast case for ASCII.

        * kwq/qt/qcolor.h: Just store RGB values, not NSColor objects.
        * kwq/KWQColor.mm:
        (QColor::QColor): No need to set color to nil.
        (QColor::name): Use QString::sprintf instead of NSString.
        (QColor::setNamedColor): Use KWQInvalidColor instead of nil.
        (QColor::getNSColor): Make an autoreleased NSColor.

        * kwq/KWQKHTMLPartImpl.mm:
        (moveWidgetsAside): Use isWidget() instead of dynamic_cast.

        * kwq/KWQSignal.h: use a QValueList instead of a fixed-size array.
        * kwq/KWQSignal.mm:
        (KWQSignal::connect): Append to list.
        (KWQSignal::disconnect): Remove from list.
        (KWQSignal::call): Use the QValueList.

        * kwq/KWQSlot.mm:
        (KWQSlot::call): Use static_cast instead of dynamic_cast where possible.

        * kwq/qt/qstring.h: Add return value to forceUnicode.
        * kwq/KWQString.mm:
        (QString::fromStringWithEncoding): Implemented using the Text Encoding
	Converter instead of CFString.
        (compareIgnoringCaseForASCIIOnly): New function. Faster find.
        (QString::find): Separate case-sensitive from case-insensitive and speed
	up both of them.
        (QString::stripWhiteSpace): Use the new forceUnicode for simplicity.
        (QString::simplifyWhiteSpace): Ditto.
        (QString::insert): Ditto.
        (QString::remove): Ditto.
        (QString::forceUnicode): Return the unicode pointer.
        (QString::fill): Use the new forceUnicode for simplicity.

        * kwq/WebCoreBridge.mm:
        (-[WebCoreBridge mouseUp:]): Fix two bugs. First, don't treat a slow
	click as a double click. Second, deliver a mouse release event even for
	a double click, as Qt does.

WebBrowser:

	Don't update the tool tip rectangles every time we update the
	background image. This makes things a little faster.

        * TextFieldWithControls.h: Boolean for whether tool tip rectangles
	are up to date.
        * TextFieldWithControls.m:
        (-[TextFieldWithControls updateToolTips]): Do work only if flag is
	NO. Set flag to YES when done.
        (-[TextFieldWithControls backgroundImage]): Don't update the tool
	tip rectangles here.
        (-[TextFieldWithControls setFrameOrigin:]): Mark the tool tip rectangles
	as out of date.
        (-[TextFieldWithControls setFrameSize:]): Mark the tool tip rectangles
	as out of date.
        (-[TextFieldWithControls drawRect:]): Update the tool tips if needed.
        (-[TextFieldWithControls showRightButton:]): Mark the tool tip rectangles
	as out of date.
        (-[TextFieldWithControls setLeftButtonImage:withOrigin:]): Ditto.
        (-[TextFieldWithControls setRightButtonImage:withOrigin:]): Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@2076 268f45cc-cd09-0410-ab3c-d52691b4dbfc