Extract the code to handle a response to a request in a separate function, in preparation of adding authentication code.
Extract the code to handle a response to a request in a
separate function, in preparation of adding authentication
code.

* outgoing.c
  (handle_response): New function.
  (read_from_connection): Use the new function.
KyleSanderson/serf,yesoce/serf,sworda/serf,stoneCC/serf,krime/serf,idomon/serf,muthusuba/serf,KyleSanderson/serf,krime/serf,SirJson/serf,sworda/serf,justinweb/serf,lazysoez/serf,TommyU/serf,lazysoez/serf,justinweb/serf,liuzongquan/serf,TommyU/serf,justinweb/serf,liuzongquan/serf,blueszhangsh/serf,justinweb/serf,liuzongquan/serf,wzugang/serf,zhengcq315/serf,pengdu/serf,zhengcq315/serf,x-clone/serf,zhupan/serf,idomon/serf,blueszhangsh/serf,lazysoez/serf,wzugang/serf,krime/serf,Manouchehri/serf,zhupan/serf,x-clone/serf,alex1818/serf,alex1818/serf,zhengcq315/serf,soufianeEL/serf,alex1818/serf,SirJson/serf,TommyU/serf,sworda/serf,yesoce/serf,stoneCC/serf,Manouchehri/serf,soufianeEL/serf,google-code-export/serf,zhengcq315/serf,pengdu/serf,blueszhangsh/serf,TommyU/serf,zhupan/serf,KyleSanderson/serf,wzugang/serf,idomon/serf,Manouchehri/serf,soufianeEL/serf,stoneCC/serf,pengdu/serf,muthusuba/serf,muthusuba/serf,wzugang/serf,idomon/serf,pengdu/serf,liuzongquan/serf,Manouchehri/serf,muthusuba/serf,x-clone/serf,alex1818/serf,yesoce/serf,SirJson/serf,x-clone/serf,google-code-export/serf,KyleSanderson/serf,blueszhangsh/serf,sworda/serf,google-code-export/serf,stoneCC/serf,SirJson/serf,krime/serf,lazysoez/serf,google-code-export/serf,yesoce/serf,zhupan/serf,soufianeEL/serf