dct/rdft: Add missing typedefs for context structs

Without the typedefs there can be trouble depending on #include order.
fft-test: Drop unnecessary #ifdefs around header includes
fft-test: Comment some #endifs
configure: Extend the neon intrinsics check

Check for an instruction that causes the (very old) Apple GCC 4.2
to error out ("unrecognizable insn").

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit '11c7155cce50971a38e6cebd39a3ba5a54645fae'

* commit '11c7155cce50971a38e6cebd39a3ba5a54645fae':
  dct/rdft: Add missing typedefs for context structs

Not merged, as it breaks build

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec: dct/rdft only support float mode, skip their contents for fixed point
Merge commit '57f1b1dcc77a93c2a5c503d4e47fe2f567cf9db5'

* commit '57f1b1dcc77a93c2a5c503d4e47fe2f567cf9db5':
  fft-test: Drop unnecessary #ifdefs around header includes

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '5be7d8597d02bcaba2de2503c0e59cf865c746dc'

* commit '5be7d8597d02bcaba2de2503c0e59cf865c746dc':
  fft-test: Comment some #endifs

Conflicts:
	libavcodec/fft-test.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '06a1d1323bc8afd03f085ae98d9b74e431b3534e'

* commit '06a1d1323bc8afd03f085ae98d9b74e431b3534e':
  configure: Extend the neon intrinsics check

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Changelog: add "version <next>:" so people dont add new things to the last release

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Support raw dvdsub palette as stored on normal dvd's

This is how the palette is stored on dvd's. Currently
only xbmc passes the palette information to libavcodec
this way.
Check return value of avio_seek and avoid modifying state if it fails

The code still modifies state if the timestamp is not found. Not
sure exactly how to avoid that.
asf hacks
if av_read_packet returns AVERROR_IO, we are done. ffmpeg's codecs might or might not handle returning any completed demuxed packets correctly
added: Ticket #7187, TV Teletext support for DVB EBU Teletext streams
Don't accept mpegts PMT that isn't current
Don't reparse PMT unless it's version has changed
Read PID timestamps as well as PCR timestamps to find location in mpegts stream
Get stream durations using read_timestamp
changed: allow 4 second skew between streams in mov before attempting to seek