Make argument const.
Make argument const.

* serf_bucket_types.h
  (serf_ssl_new_session_t): Make the ssl_session ptr const, the serialized SSL
       session ticket is supposed to be opaque to the client.

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