dv: Update DV-profile-related functions to current public API
tiff: Replace deprecated PIX_FMT names by modern ones
lcl: Disentangle pointers to input data and decompression buffer

This is cleaner and avoids a cast plus a related const qualifier warning.
vf_fps: Replace use of deprecated AVFilterBufferRef by AVFrame
examples: filter_audio: Add missing mem.h header for av_freep()
filtfmts: Replace deprecated uses of AVFilterPad

Also add missing mem.h header for av_freep().
avcodec: options: Add missing deprecation ifdefs around emu_edge
avcodec: Deprecate unused defines and options