flesh out --replay-gain implementation, make the encoder add a 4k padding block by default
flesh out --replay-gain implementation, make the encoder add a 4k padding block by default

LordJZ/libflac,Distrotech/flac,Distrotech/flac,LordJZ/libflac,kode54/flac,fredericgermain/flac,kode54/flac,LordJZ/libflac,waitman/flac,kode54/flac,fredericgermain/flac,fredericgermain/flac,waitman/flac,LordJZ/libflac,waitman/flac,kode54/flac,waitman/flac,waitman/flac,Distrotech/flac,Distrotech/flac,fredericgermain/flac