n3.4.14
arm: rename ARMVFP config symbol to VFP
Merge commit '6a1ea4ec932f4fc9fdc00ec51ee070b298ddb35f'
avutil/attributes: add AV_GCC_VERSION_AT_MOST
avutil/cpu: split flag checks per arch in av_cpu_max_align()
Merge commit '73c8c0341cce9e1a6c4169721f5123f97fc4be2f'
Merge commit '7ffda66fd5c81af4725bff7c2c4f207ba2aa0613'
Merge commit '831a1180785a786272cdcefb71566a770bfb879e'
Reinstate proper FFmpeg license for all files.
lavu/arm: Check for have_vfp_vm instead of !have_vfpv3 for float_dsp_vfp
armv6: Accelerate butterflies_float
avutil/arm/intmath: return int for uint8 / uint16 clip
all: Add missing header guards
Replace FFmpeg with Libav in licence headers