MJPEG Tools Svn

update the comment at the top which lists the functions in the file. replace
the intsamesign (removed earlier) with rnddiv2 (recently added but not used
anywhere yet).

Merge Scott's inline SSE/MMX DCT and transform routines

Merged updates since last release ready for copying back into HEAD

Seems that an athlon64 can return 31.

Operton and AMD64 update from Gert Vervoort

AMD64 fixes from gert dot vervoort at hccnet dot nl

This commit was manufactured by cvs2svn to create tag
'PRE_BACKMERGE_MPEG_DEVEL'.

This commit was manufactured by cvs2svn to create tag
'LAST_MPEG_DEVEL_MERGE'.

intsamesign() in fastintfns.h was broken for negative y values. The only
module which uses that function is quantize_ref.c so put a correct version in
that file and remove it from fastintfns.h

quicktime_read_audio() came up undefined when using the CVS version of
libquicktime (it is an obsolete function the libquicktime folks want to
get rid of as soon as possible). After asking on the libquicktime mailinglist
the replacement for quicktime_read_audio() is lqt_decode_audio_track().
A similar function exists for writing audio (lqt_encode_audio_track).
One VERY important and useful side effect of using the lqt_{encode|decode}_audio_track
routines is that they handle the endianness of the data - the underlying
libquickime routines know about flipping the bytes and thus that logic can
disappear from lav_io.c