[Patch] Fix seekoff/pos and sputbackc testcases

[Paolo Carlini]

Benjamin Kosnik wrote:

>>the below provides correct unbuffered seekoff/pos testcases and
>>fixes the existing buffered ones together with those for sputbackc
>>(both unbuffered and buffered).
>>    
>>
>Looks excellent, thanks. Please check these in.
>
It's now in together with Nathan's contribution.

>>In the near future I'd like to provide some more seek testcases
>>for pure in and out.
>>    
>>
>Sounds good.
>
Fine. Also, I'll fix/split the 'sungetc' testcases.

Paolo.