digital: fixed byte-in, byte-out version of the TSB correlate access code. Matches behavior of the float-in, float-out for bit streams.
fec: fixed bug in dummy decoder that shifted the samples by +1.
fec: cleanup
blocks: added endianness toggle to repack bits.
Merge branch 'maint'

Conflicts:
	gr-fec/lib/decoder_impl.cc
	gr-fec/lib/encoder_impl.cc