GitLab

        Reviewed by Eric Seidel.

        We shouldn't bother running GYP if the generated files are newer than the GYP files
        https://bugs.webkit.org/show_bug.cgi?id=57146

        In the common case, this check will avoid any overhead from processing
        the GYP files.  Another approach to doing this is to add the feature to
        GYP directly, but GYP's approach to this problem is to compute the
        output in its entirety and compare it byte-for-byte against the output
        file.  In the future, it might make sense to add this approach as an
        alternative approach for GYP itself.

        I also removed JavaScriptGlue from the script because we're not really
        going to change JavaScriptGlue over to GYP.  We were using
        JavaScriptGlue as a learning experience.

        * Source/gyp/configure:

git-svn-id: svn://svn.chromium.org/blink/trunk@82030 bbb929c8-8fbe-4397-9dbb-9b2b20218538