Fix compilation on ARM with android gcc 4.7

With the current code it fails due to running out
of registers.
So code the store offsets manually into the assembler
instead.
Passes "make fate-dts".

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
(cherry picked from commit 8067f55edf3719182aed6e5b57b7863889f80218)

Fixes ticket #2756.
rtpdec_asf: Copy the need_parsing field from the chained demuxer

This fixes playback of mp3 streams in rtp/asf. This used to work
until 950482bf, but mostly by coincidence.

Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 2aec9e228cb317cca8cda9e03986c8482ea54404)

Fixes ticket #3223