Reviewed by Darin Adler.

        Introduce WTF HexNumber.h
        https://bugs.webkit.org/show_bug.cgi?id=56099

        Introduce a set of functions that ease converting from a bye or a number to a hex string,
        replacing several of these conversions and String::format("%x") usages all over WebCore.

        * GNUmakefile.am: Add HexNumber.h to build.
        * JavaScriptCore.exp: Export StringBuilder::reserveCapacity.
        * JavaScriptCore.gypi: Add HexNumber.h to build.
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.def: Export StringBuilder::reserveCapacity.
        * JavaScriptCore.vcproj/WTF/WTF.vcproj: Add HexNumber.h to build.
        * JavaScriptCore.xcodeproj/project.pbxproj: Ditto.
        * wtf/CMakeLists.txt: Ditto.
        * wtf/HexNumber.h: Added.
        (WTF::Internal::hexDigitsForMode): Internal helper.
        (WTF::appendByteAsHex): Free function, that appends a byte as hex string into a destination.
        (WTF::placeByteAsHex): Ditto, but places the result using *foo++ = '..' or foo[index++] = '..'
        (WTF::appendUnsignedAsHex): Free function, that appends a number as hex string into a destination.
2011-03-24  Nikolas Zimmermann  <nzimmermann@rim.com>

        Reviewed by Darin Adler.

        Introduce WTF HexNumber.h
        https://bugs.webkit.org/show_bug.cgi?id=56099

        Introduce a set of functions that ease converting from a bye or a number to a hex string,
        replacing several of these conversions and String::format("%x") usages all over WebCore.

        * ForwardingHeaders/wtf/HexNumber.h: Added.
        * css/CSSOMUtils.cpp:
        (WebCore::serializeCharacterAsCodePoint):
        * css/CSSParser.cpp:
        (WebCore::quoteCSSString):
        * inspector/InspectorResourceAgent.cpp:
        (WebCore::createReadableStringFromBinary):
        * platform/FileSystem.cpp:
        (WebCore::encodeForFileName):
        * platform/KURL.cpp:
        (WebCore::appendEscapedChar):
        * platform/UUID.cpp:
        (WebCore::createCanonicalUUIDString):
        * platform/graphics/Color.cpp:
        (WebCore::Color::serialized):
        * platform/network/FormDataBuilder.cpp:
        (WebCore::FormDataBuilder::encodeStringAsFormData):
        * rendering/RenderTreeAsText.cpp:
        (WebCore::quoteAndEscapeNonPrintables):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@81943 268f45cc-cd09-0410-ab3c-d52691b4dbfc