Revert "Fix incorrect udp_port bind selection."
Revert "Fix incorrect udp_port bind selection."

Patch was incorrect; it wired in some dead code which broke tests.
Starting memcached with -p 11212 -U 0 should disable UDP, but with this patch
-U 0 means "use the tcp port".

tomykaira/memcached,sagark/memcached-accel,dianerdianer/memcached,ZhangZhenhua/memcached,dormando/memcached,dormando/memcached,rhli/memcached,guikcd/memcached,tomykaira/memcached,bpzhang/memcached,myPublicGit/memcached,myPublicGit/memcached,EdwardLee03/memcached,mitliucak/memcached,13693100472/memcached,gencer/memcached,cloudrain21/memcached,elfchief/memcached,memcached/memcached,Distrotech/memcached,memcached/memcached,dustin/memcached,mitliucak/memcached,romanticode/memcached,surajdharmapuram/memcached,Distrotech/memcached,guikcd/memcached,allen8807/memcached-1,allen8807/memcached-1,jbergstroem/memcached,DigitalAce/memcached,elfchief/memcached,guikcd/memcached,rmccullagh/memcached,mitliucak/memcached,samt42/memcached,tmharrisonwang/memcached,Metaswitch/memcached,cloudrain21/memcached,13693100472/memcached,tomykaira/memcached,memcached/memcached,fengshao0907/memcached,romanticode/memcached,jeremiahyan/memcached,sagark/memcached-accel,xiaosl/memcached,leverich/memcached-affinity,msg7086/repcached,ClearwaterCore/memcached,cloudrain21/memcached,tellapart/memcached,angusfenying/memcached-win64,allen8807/memcached-1,memcached/memcached,tellapart/memcached,DSrcl/memcached,sagark/memcached-accel,elfchief/memcached,jeremiahyan/memcached,ZhangZhenhua/memcached,tmharrisonwang/memcached,myPublicGit/memcached,EdwardLee03/memcached,amyvmiwei/memcached,amyvmiwei/memcached,Dhruva6/memcached,amyvmiwei/memcached,kamyu104/memcached,Danzeer/memcached,emcconville/memcached,samt42/memcached,dkrotx/memcached-dd,gencer/memcached,rhli/memcached,Dhruva6/memcached,neutronsharc/memcached,fengshao0907/memcached,dkrotx/memcached-dd,alexandermerritt/memcached,tellapart/memcached,dkrotx/memcached-dd,msg7086/repcached,neutronsharc/memcached,myPublicGit/memcached,Metaswitch/memcached,leedc/memcached,rmccullagh/memcached,zaycev/memcached,dustin/memcached,neutronsharc/memcached,romanticode/memcached,samanbarghi/memcached,alexandermerritt/memcached,dianerdianer/memcached,neutronsharc/memcached,allen8807/memcached-1,Distrotech/memcached,alexandermerritt/memcached,leedc/memcached,zaycev/memcached,ClearwaterCore/memcached,leverich/memcached-affinity,msg7086/repcached,DigitalAce/memcached,williamcheungthu/memcached,13693100472/memcached,fengshao0907/memcached,jeremiahyan/memcached,kamyu104/memcached,williamcheungthu/memcached,emcconville/memcached,Danzeer/memcached,samanbarghi/memcached,rmccullagh/memcached,niaomingjian/memcached,samanbarghi/memcached,niaomingjian/memcached,Dhruva6/memcached,surajdharmapuram/memcached,xiaosl/memcached,alexandermerritt/memcached,dkrotx/memcached-dd,tmharrisonwang/memcached,guikcd/memcached,ZhangZhenhua/memcached,dianerdianer/memcached,jbergstroem/memcached,tmharrisonwang/memcached,samt42/memcached,dormando/memcached,Dhruva6/memcached,tomykaira/memcached,kamyu104/memcached,xiaosl/memcached,dianerdianer/memcached,rhli/memcached,DSrcl/memcached,msg7086/repcached,surajdharmapuram/memcached,13693100472/memcached,emcconville/memcached,DSrcl/memcached,DSrcl/memcached,williamcheungthu/memcached,romanticode/memcached,bpzhang/memcached,mdounin/memcached,leedc/memcached,dustin/memcached,mdounin/memcached,Metaswitch/memcached,bpzhang/memcached,surajdharmapuram/memcached,sagark/memcached-accel,ClearwaterCore/memcached,samanbarghi/memcached,leverich/memcached-affinity,gencer/memcached,ZhangZhenhua/memcached,elfchief/memcached,leedc/memcached,EdwardLee03/memcached,DigitalAce/memcached,xiaosl/memcached,guikcd/memcached,zaycev/memcached,ClearwaterCore/memcached,niaomingjian/memcached,EdwardLee03/memcached,fengshao0907/memcached,Danzeer/memcached,rmccullagh/memcached,angusfenying/memcached-win64,emcconville/memcached,dormando/memcached,niaomingjian/memcached,gencer/memcached,jbergstroem/memcached,13693100472/memcached,zaycev/memcached,cloudrain21/memcached,jeremiahyan/memcached,Danzeer/memcached,dormando/memcached,mdounin/memcached,bpzhang/memcached,mitliucak/memcached,williamcheungthu/memcached,angusfenying/memcached-win64,rmccullagh/memcached,angusfenying/memcached-win64,kamyu104/memcached,elfchief/memcached,sagark/memcached-accel,Metaswitch/memcached,amyvmiwei/memcached,rhli/memcached,samt42/memcached,msg7086/repcached,Metaswitch/memcached,gencer/memcached,memcached/memcached