* ./plugins/filter/deinterlace.c: added two new deinterlacing methods,

    "discard" which is very CPU efficient, and "blend" (yes there used to be
    a "blend" method but it's now called "linear". Don't ask) which loses some
    vertical resolution but discards the mice teeth effect. Information was
    found on http://www.100fps.com/index.htm.

    We now have "discard", "blend", "bob" and "linear".