Reviewed by Darin.

    Reviewed by Darin.

        <rdar://problem/4506601> TOT WebCore fails to build ppc64

        Switch many CG calls to use CGFloat for colors and gradients

        * bindings/objc/DOMCSS.mm:
        (-[DOMRGBColor dealloc]): cast _internal to uintptr_t
        (-[DOMRGBColor finalize]): cast _internal to uintptr_t
        (-[DOMRGBColor red]): cast _internal to uintptr_t
        (-[DOMRGBColor green]): cast _internal to uintptr_t
        (-[DOMRGBColor blue]): cast _internal to uintptr_t
        (-[DOMRGBColor alpha]): cast _internal to uintptr_t
        (-[DOMRGBColor _color]): cast _internal to uintptr_t
        * bridge/mac/FrameMac.mm:
        (WebCore::regExpForLabels): use CFIndex as the type returned from indexOfObject:
        * bridge/mac/WebCoreFrameBridge.mm:
        (-[WebCoreFrameBridge baseWritingDirectionForSelectionStart]): workaround for <rdar://problem/4509035>
        * config.h: define CGFloat if it isn't defined already
        * html/CanvasGradient.cpp:
        (WebCore::CanvasGradient::addColorStop):
        (WebCore::gradientCallback):
        (WebCore::CanvasGradient::platformShading):
        * html/CanvasRenderingContext2D.cpp:
        (WebCore::CanvasRenderingContext2D::setShadow):
        (WebCore::CanvasRenderingContext2D::applyShadow):
        (WebCore::CanvasRenderingContext2D::applyStrokePattern):
        (WebCore::CanvasRenderingContext2D::applyFillPattern):
        * html/CanvasStyle.cpp:
        (WebCore::CanvasStyle::applyStrokeColor):
        (WebCore::CanvasStyle::applyFillColor):
        * kcanvas/device/quartz/KCanvasFilterQuartz.mm:
        (WebCore::alphaImageForImage):
        (WebCore::KCanvasFEColorMatrixQuartz::getCIFilter):
        * kcanvas/device/quartz/KCanvasMaskerQuartz.mm:
        (WebCore::applyLuminanceToAlphaFilter):
        (WebCore::applyExpandAlphatoGrayscaleFilter):
        (WebCore::transformImageIntoGrayscaleMask):
        * kcanvas/device/quartz/KCanvasPathQuartz.mm:
        (WebCore::scratchContext):
        * kcanvas/device/quartz/KRenderingPaintServerGradientQuartz.mm:
        (WebCore::cgGradientCallback):
        (WebCore::CGShadingRefForLinearGradient):
        (WebCore::CGShadingRefForRadialGradient):
        (WebCore::KRenderingPaintServerGradientQuartz::updateQuartzGradientStopsCache):
        * kcanvas/device/quartz/KRenderingPaintServerQuartz.h:
        (WebCore::):
        * kcanvas/device/quartz/KRenderingPaintServerQuartz.mm:
        (WebCore::KRenderingPaintServerPatternQuartz::setup):
        * kcanvas/device/quartz/QuartzSupport.mm:
        (WebCore::applyStrokeStyleToContext):
        * kwq/WebCoreAXObject.mm:
        (CreateCGColorIfDifferent):
        * platform/Color.cpp:
        (WebCore::Color::getRGBA): new name, was getRgbaF. getRGBA uses float and has a double overload
        * platform/Color.h:
        * platform/mac/ClipboardMac.h: no need to define NSDragOperation
        * platform/mac/ColorMac.mm:
        (+[WebCoreControlTintObserver WebCore]):
        * platform/mac/GraphicsContextMac.mm:
        (WebCore::GraphicsContext::drawLine):
        * platform/mac/ImageMac.mm:
        (WebCore::Image::checkForSolidColor):
        (WebCore::Image::tileInRect):
        (WebCore::Image::scaleAndTileInRect):
        * platform/mac/TextEncodingMac.cpp:
        (WebCore::TextEncoding::fromUnicode):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@13901 268f45cc-cd09-0410-ab3c-d52691b4dbfc