Saves having to malloc/free a fixed size structure.
Buf_Init() now takes ptr to Buffer to initialiase.
Change Buf_Destroy() to return ptr to string when not freed.
Remove large number of casts to (Byte) and (Byte *) - 'Byte' is 'char' here.
Buf_AddByte[s] guarantees that the data is 0 termininated, so never add '\0'.
Keep 'count' not 'left' and 'inPtr', code is simplier with only one update.
Fix fallou, no functional change.
Replace Buf_Discard() with Buf_Empty() since the former might leave the
'outPtr != buffer' and the only caller wanted all the data discared.
Remove 'outPtr' now that it always equals 'buffer'.
The assumption about Buf_GetAll()is now guaranteed by design.
dsl