llseek.2, lseek.2, lseek64.3: Duplicate documentation?

[Alejandro Colomar <colomar.6.4.3@xxxxxxxxx>]

Hi Michael,

lseek64.3 documents lseek64(), and it also documents lseek(), lseek64(), 
and _llseek().

Then there's lseek.2 which documents lseek(),
and llseek.2, which awkwardly only documents _llseek() only.
And then _llseek.2 which is a link to llseek.2.

Maybe you would like to reorganize those pages.

Cheers,

Alex