memcached-tool dump command fixed for expired/evicted/deleted keys
memcached-tool dump command fixed for expired/evicted/deleted keys

Fixed the memcached-tool 'dump' command to handle the case when
dumping keys that have expired, evicted or been deleted in the midst
of the big iteration.  Previously, memcached-tool would just hang in
these cases.  The memcached-tool uses the results from 'stats
cachedump' as the keys to iterate through, and will do a 'get' on each
key.  The 'stats cachedump' implementation, however, does not check
for expiry, which is debatably the correct thing to do.

dustin/memcached,cloudrain21/memcached-1,jeremiahyan/memcached,mdounin/memcached,zbase/moxi,shelsonjava/memcached,DSrcl/memcached,sagark/memcached-accel,saumitra/memcached,tmharrisonwang/memcached,owendCB/memcached,ZhangZhenhua/memcached,neutronsharc/memcached,dormando/memcached,Danzeer/memcached,EdwardLee03/memcached,jbergstroem/memcached,dormando/memcached,EdwardLee03/memcached,gencer/memcached,memcached/memcached,daverigby/memcached,tomykaira/memcached,memcached/memcached,rmccullagh/memcached,alexandermerritt/memcached,guikcd/memcached,alexandermerritt/memcached,samt42/memcached,guikcd/memcached,rhli/memcached,kamyu104/memcached,angusfenying/memcached-win64,DSrcl/memcached,rhli/memcached,couchbase/memcached,zbase/memcached,saumitra/memcached,niaomingjian/memcached,allen8807/memcached-1,dkrotx/memcached-dd,membase/moxi,abhinavdangeti/memcached,Danzeer/memcached,samanbarghi/memcached,gencer/memcached,myPublicGit/memcached,ZhangZhenhua/memcached,zbase/moxi,couchbase/moxi,Distrotech/memcached,dianerdianer/memcached,msg7086/repcached,alexandermerritt/memcached,daverigby/kv_engine,elfchief/memcached,cloudrain21/memcached,amyvmiwei/memcached,fengshao0907/memcached,abhinavdangeti/memcached,dkrotx/memcached-dd,kamyu104/memcached,samt42/memcached,membase/moxi,Dhruva6/memcached,steveyen/moxi,DigitalAce/memcached,zbase/moxi,memcached/memcached,couchbase/memcached,williamcheungthu/memcached,gencer/memcached,msg7086/repcached,cloudrain21/memcached,tomykaira/memcached,osheroff/memcached_kdtree,Distrotech/memcached,xiaosl/memcached,steveyen/moxi,daverigby/memcached,leverich/memcached-affinity,williamcheungthu/memcached,amyvmiwei/memcached,steveyen/moxi,tellapart/memcached,owendCB/memcached,membase/moxi,cloudrain21/memcached,rmccullagh/memcached,saumitra/memcached,guikcd/memcached,xiaosl/memcached,shelsonjava/memcached,romanticode/memcached,dormando/memcached,emcconville/memcached,jimwwalker/memcached,jeremiahyan/memcached,zbase/memcached,Danzeer/memcached,dianerdianer/memcached,leverich/memcached-affinity,couchbase/moxi,EdwardLee03/memcached,zaycev/memcached,daverigby/kv_engine,zbase/moxi,tmharrisonwang/memcached,jimwwalker/memcached,guikcd/memcached,Metaswitch/memcached,guikcd/memcached,shelsonjava/memcached,kamyu104/memcached,mdounin/memcached,dustin/memcached,bpzhang/memcached,rhli/memcached,elfchief/memcached,romanticode/memcached,couchbase/memcached,steveyen/moxi,emcconville/memcached,zaycev/memcached,leedc/memcached,emcconville/memcached,msg7086/repcached,sagark/memcached-accel,tmharrisonwang/memcached,niaomingjian/memcached,mrkwse/memcached,gencer/memcached,daverigby/kv_engine,tellapart/memcached,tomykaira/memcached,samt42/memcached,sagark/memcached-accel,angusfenying/memcached-win64,surajdharmapuram/memcached,fengshao0907/memcached,msg7086/repcached,bpzhang/memcached,daverigby/memcached,zbase/memcached,13693100472/memcached,cloudrain21/memcached-1,tomykaira/memcached,romanticode/memcached,bpzhang/memcached,jbergstroem/memcached,williamcheungthu/memcached,jbergstroem/memcached,mrkwse/memcached,abhinavdangeti/memcached,rmccullagh/memcached,cloudrain21/memcached-1,amyvmiwei/memcached,williamcheungthu/memcached,membase/moxi,neutronsharc/memcached,cloudrain21/memcached-1,tmharrisonwang/memcached,myPublicGit/memcached,dkrotx/memcached-dd,leedc/memcached,EdwardLee03/memcached,samt42/memcached,gencer/memcached,steveyen/moxi,msg7086/repcached,rmccullagh/memcached,elfchief/memcached,daverigby/memcached,membase/moxi,mrkwse/memcached,DSrcl/memcached,ZhangZhenhua/memcached,osheroff/memcached_kdtree,Metaswitch/memcached,abhinavdangeti/memcached,zbase/memcached,surajdharmapuram/memcached,Dhruva6/memcached,mitliucak/memcached,allen8807/memcached-1,fengshao0907/memcached,dianerdianer/memcached,surajdharmapuram/memcached,DigitalAce/memcached,sagark/memcached-accel,elfchief/memcached,owendCB/memcached,surajdharmapuram/memcached,leedc/memcached,romanticode/memcached,couchbase/moxi,cloudrain21/memcached,fengshao0907/memcached,zbase/memcached,abhinavdangeti/memcached,mitliucak/memcached,dianerdianer/memcached,Metaswitch/memcached,ClearwaterCore/memcached,neutronsharc/memcached,tellapart/memcached,memcached/memcached,sagark/memcached-accel,zaycev/memcached,dustin/memcached,samanbarghi/memcached,couchbase/memcached,ClearwaterCore/memcached,DSrcl/memcached,niaomingjian/memcached,jeremiahyan/memcached,alexandermerritt/memcached,jimwwalker/memcached,owendCB/memcached,myPublicGit/memcached,Dhruva6/memcached,angusfenying/memcached-win64,allen8807/memcached-1,angusfenying/memcached-win64,13693100472/memcached,neutronsharc/memcached,mdounin/memcached,samanbarghi/memcached,jeremiahyan/memcached,xiaosl/memcached,Metaswitch/memcached,bpzhang/memcached,Danzeer/memcached,Distrotech/memcached,rmccullagh/memcached,kamyu104/memcached,ClearwaterCore/memcached,dormando/memcached,leedc/memcached,allen8807/memcached-1,xiaosl/memcached,elfchief/memcached,membase/moxi,13693100472/memcached,leverich/memcached-affinity,niaomingjian/memcached,zbase/moxi,Dhruva6/memcached,ZhangZhenhua/memcached,amyvmiwei/memcached,osheroff/memcached_kdtree,mitliucak/memcached,couchbase/moxi,DigitalAce/memcached,memcached/memcached,mrkwse/memcached,mitliucak/memcached,daverigby/kv_engine,13693100472/memcached,13693100472/memcached,zaycev/memcached,dkrotx/memcached-dd,rhli/memcached,emcconville/memcached,couchbase/moxi,Metaswitch/memcached,dormando/memcached,ClearwaterCore/memcached,samanbarghi/memcached,myPublicGit/memcached,shelsonjava/memcached,couchbase/moxi