* Making DV codec release a buffer on exit
   * Flagging accepted pix_fmts for DV encoder

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and fix GPL/LGPL version mismatches.

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patch by Alexander Strange, astrange at ithinksw dot com

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[ Based on a patch by Brian Brice (bbrice at newtek dot com) ]

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will accept incorrect pix_fmt's and such, but decoder will work much better
with containers not setting the same attributes. It seems like there will
be a generic mechanism for checking such constraints, but if not I can always
resurrect this check for *encoder* only.

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Patch by Daniel Maas dmaas at maasdigital dot com

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method defined by SMPTE

Patch by Dan Maas

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at least weighting got implemented thanks to Dan. ;-)

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performance impact is less than 1%.

Patch by Dan Maas  (dmaas at maasdigital dot com)

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values), so the comparison with vs_total_ac_bits is messed up on the
first couple loop iterations, leading to AC underflows.

the b->prev[] pointers were not being maintained correctly. We
potentially have to update b->prev[] both before and after the area
whose VLC length is getting adjusted.

this also might fix the ppc regression failure?

patch by (Dan Maas <dmaas maasdigital com>)

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roman, dont hesitate to reverse this and solve it differntly if you want ...

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patch by Steve Lhomme, steve .dot. lhomme .at. free .dot. fr

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leak for cases like dlopening libavcodec.so and such, but I still
   don't know how to catch such events.

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approved by Roman Shaposhnik

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dc coeff rounding fix
class=3 num of bits fix
do interlaced check & idct only if CODEC_FLAG_INTERLACED_DCT

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simple now, take a look for yourself).

   * additional optimizations of the decoder. It runs at 55fps now
     on my desktop and it used to be ~45fps.

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on my desktop.
     * Misc. DV cleanups and fixes.

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from common.c -> common.h so that they can be inlined.
         + performace gain ~1% (measured with DV decoding)
	 + code bloat 0.05%
      Looks like a win-win solution.

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in terms of time and we're doing slightly better w.r.t. to
     quality. I don't think there's much room for improvement
     left, but I'd like to try and vectorize a couple of things.
     Btw, any ideas on what may impact performance will be greatly
     appreciated.

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* simple/accurate implementation of dct248
   * DV encoding now supports 2-4-8 DCT
   * DV encoding gets a bit faster (but still miles away
     from what I think it could do)
   * misc. DV codec cleanups

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