Reviewed by Mark Rowe.

        - fix <rdar://problem/6020441> REGRESSION: Layers on NWA.com render ugly

        The old version of the OpenCube QuickMenu library used on this site still has code
        that detects Netscape 4 by checking appVersion to see if it has the substring "4."
        in it. We decided to special-case the filename of the script and tweak the appVersion
        for files with that name.

        * bindings/js/ScriptController.cpp:
        (WebCore::ScriptController::ScriptController): Replace m_processingInlineCode with
        m_sourceURL. Use false instead of 0 to initialize a boolean.
        (WebCore::ScriptController::evaluate): Call argument sourceURL, not filename.
        Store current sourceURL in m_sourceURL. This fixes a mistake in the code that
        maintained the value of m_processingInlineCode, since the old code set it to
        false rather than restoring it. Renamed a local variable named sourceURL to
        exceptionSourceURL for clarity.
        (WebCore::ScriptController::processingUserGesture): Code that formerly used
        m_processingInlineCode to detect that it was evaluating code with no URL now
        uses m_sourceURL to do the same check.

        * bindings/js/ScriptController.h: Renamed filename argument to sourceURL; it has always
        been a URL, not a file path. Added a public sourceURL function and m_sourceURL and
        removed m_processingInlineCode.

        * page/Navigator.cpp:
        (WebCore::shouldHideFourDot): Added. Returns true if the currently running script has
        a source URL ending in "/dqm_script.js" and if the settings say we should do
        site-specific quirks (really JavaScript-library-specific in this case).
        (WebCore::Navigator::appVersion): Replace "4." with "4_" if shouldHideFourDot is true.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@35050 268f45cc-cd09-0410-ab3c-d52691b4dbfc