* context.c   (serf_context_run): Return the explicitly documented error on timeouts     instead of just any error that APR documents as being timeup. On Windows     this allows seeing the difference between a timed out connection (reported     as error via the poll) and no events within the timespan.
* context.c
  (serf_context_run): Return the explicitly documented error on timeouts
    instead of just any error that APR documents as being timeup. On Windows
    this allows seeing the difference between a timed out connection (reported
    as error via the poll) and no events within the timespan.

Note from Bert: this patch accidently contains a new error code description
which should have been part of r2184 instead.

stoneCC/serf,SirJson/serf,KyleSanderson/serf,pengdu/serf,alex1818/serf,zhengcq315/serf,KyleSanderson/serf,zhupan/serf,pengdu/serf,soufianeEL/serf,yesoce/serf,alex1818/serf,KyleSanderson/serf,zhupan/serf,soufianeEL/serf,lazysoez/serf,zhupan/serf,yesoce/serf,lazysoez/serf,pengdu/serf,SirJson/serf,x-clone/serf,google-code-export/serf,yesoce/serf,zhengcq315/serf,SirJson/serf,lazysoez/serf,zhengcq315/serf,alex1818/serf,soufianeEL/serf,stoneCC/serf,stoneCC/serf,alex1818/serf,zhupan/serf,google-code-export/serf,google-code-export/serf,google-code-export/serf,soufianeEL/serf,SirJson/serf,yesoce/serf,x-clone/serf,lazysoez/serf,x-clone/serf,x-clone/serf,stoneCC/serf,zhengcq315/serf,pengdu/serf,KyleSanderson/serf