av_vdpau_get_profile: mask out H.264 intra profile flag

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
configure: enable PIC on s390(x)

The s390 architecture requires shared libraries to be built in PIC mode.
Otherwise applications will get wrong relocations at run-time, leading
to confusing segmentation faults.

CC: libav-stable@libav.org
avfilter: Add missing emms_c when needed

Arch specific calls should have an emms_c following to keep the cpu
state consistent.

Reported-By: wm4
CC: libav-stable@libav.org
Merge commit 'eeaf4f3b87815cbae4c12856cfaafb3a2dae8e0c'

* commit 'eeaf4f3b87815cbae4c12856cfaafb3a2dae8e0c':
  av_vdpau_get_profile: mask out H.264 intra profile flag

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '5ddc9f5052316608799b932c604f9e7561f8ce24'

* commit '5ddc9f5052316608799b932c604f9e7561f8ce24':
  configure: enable PIC on s390(x)

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  avfilter: Add missing emms_c when needed

Merged-by: Michael Niedermayer <michaelni@gmx.at>
ra144enc: fix use of scalarprod_int16

c3390fd56cf55259ea7665ecea6c8aeddf56e2fc made use of the DSP function
but did not complement it with a call to emms, which is done here before
computations involving floats are performed.

Fixes ticket #3429, which affected MMX/MMXExt machines.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/ra144enc: avoid calling emms when the SSE2 version is used

emms is a rather slow operation

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