Rename kjs_css to JSRGBColor.

        * DerivedSources.make:
        * GNUmakefile.am:
        * WebCore.pro:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
        * WebCoreSources.bkl:
        * bindings/js/JSRGBColor.cpp: Copied from bindings/js/kjs_css.cpp.
        * bindings/js/JSRGBColor.h: Copied from bindings/js/kjs_css.h.
        * bindings/js/kjs_css.cpp: Removed.
        * bindings/js/kjs_css.h: Removed.
        * bindings/js/kjs_window.cpp:
        * bindings/objc/DOMUtility.mm:
        * bindings/scripts/CodeGeneratorJS.pm:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@30776 268f45cc-cd09-0410-ab3c-d52691b4dbfc