Merge remote-tracking branch 'qatar/master'

Merge remote-tracking branch 'qatar/master'

* qatar/master:
  Add some missing mathematics.h #includes for av_rescale().
  opencore-amr: Add missing initializer braces to shut up gcc warning.
  ARM: workaround for bug in GNU assembler
  dv: fix comment wording mistake
  Rename libavcodec/high_bit_depth.h ---> libavcodec/bit_depth_template.c
  dv: fix valgrind use of uninitialised value warnings.
  mxfenc: fix ignored drop flag in binary timecode representation.
  PPC: use Altivec IMDCT only for supported sizes
  dv: fix comment spelling
  configure: simplify -rpath-link linker flag

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