lavf/mov: skip version and flags attributes in mov_read_chan function

Fixes ticket #1764.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavf/segment: fix DTS inconsistencies with -reset_timestamps

The DTS needs to be resynched against the segment start PTS, or the
resulting DTS may result < PTS.

Reported-by: Owen Jones <riots6@gmail.com>

See thread:
Subject: [FFmpeg-user] pts/dts error using reset_timestamps while splitting a DVD
Date: Sat, 19 Jan 2013 08:58:27 +0000
doc: replace '×' symbol with 'x'

Non-ascii chars are not correctly rendered in both MAN and HTML output or
may even cause compilation failure. Thus avoid to use them until we find
a satisfying way to deal with them.

Fix trac ticket #2243.
flac: don't check the number of channels before setting the channel layout

This is unnecessary, as ff_flac_set_channel_layout can handle any number of channels.
mov: remove unused function

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>