Re: [Gnash-dev] pre-release testing

[strk]

Some things I think we should fix before release:

        - ./configure improvements:
          + exit with error when required deps are not found
            (last time I checked didn't work for ffmpeg sound and agg renderer)
          + exit with an error when an unimplemented gui/renderer is
            requested, document the working ones at least in gui/README
          + fix the flipped SDL rendering

--strk;