Merge "PDL: fix “fractional bit” -> “fractional byte”"

}

```

The endianess affects how fields of fractional bit-size (hence named bit-fields) are parsed or

serialized. Such fields are grouped together to the next byte boundary, least

significant bit first, and then byte-swapped to the required endianess before

being written to memory, or after being read from memory.

The endianess affects how fields of fractional byte sizes (hence named

bit-fields) are parsed or serialized. Such fields are grouped together to the

next byte boundary, least significant bit first, and then byte-swapped to the

required endianess before being written to memory, or after being read from

memory.

```

packet Coffee {