cosmetics: Place arch initialization calls in alphabetical order
ppc: cosmetics: Consistently format CPU flag detection invocations
x86: Add and use more convenience macros to check CPU extension availability
x86: avcodec: Use convenience macros to check for CPU flags
x86: avcodec: Consistently structure CPU extension initialization
arm: dcadsp: Move synth filter initialization to dcadsp file
arm: float_dsp: Propagate cpu_flags to vfp initialization function
arm: fmtconvert: Split armv6 fmtconvert code off from vfp code