simplification.

anything that its name implies)

decoder), declared a few things static

indexing of the pitch code for stereo

and bit-stream version

now that we no longer do normalized pitch

tonal artefacts. This replaces folding for all cases where we have at least
one pulse.

bit before the rate is decided (otherwise they'll end up at the wrong place)
and we have to shrink the byte buffer before writing raw bits.

original ec_encode_bin()/ec_decode_bin() to optimize performance when ft is
a power of two.

Making it so all the information encoded directly with ec_enc_bits() gets
stored at the end of the stream, without going through the range coder. This
should be both faster and reduce the effects of bit errors.

Conflicts:

	tests/ectest.c