Make serf a bit easier to use by removing an undocumented API requirement.
Make serf a bit easier to use by removing an undocumented API requirement.

* outgoing.c
  (serf_connection_create2): Port needs to be filled in in uri, so if apr didn't
   do that, set it to the default port for the scheme explicitly.

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