Fix a bug. Where DestroyDB deletes a non-existant archive directory.
Fix a bug. Where DestroyDB deletes a non-existant archive directory.

Summary:
C tests would fail sometimes as DestroyDB would return a Failure Status
message when deleting an archival directory which was not created
(WAL_ttl_seconds = 0).

Fix: Ignore the Status returned on Deleting Archival Directory.

Test Plan: * make check

Reviewers: dhruba, emayanke

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D7395

tschottdorf/rocksdb,virtdb/rocksdb,Vaisman/rocksdb,tsheasha/rocksdb,luckywhu/rocksdb,IMCG/RcoksDB,biddyweb/rocksdb,wat-ze-hex/rocksdb,norton/rocksdb,geraldoandradee/rocksdb,Andymic/rocksdb,wlqGit/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,NickCis/rocksdb,Andymic/rocksdb,wskplho/rocksdb,norton/rocksdb,temicai/rocksdb,amyvmiwei/rocksdb,kaschaeffer/rocksdb,kaschaeffer/rocksdb,vashstorm/rocksdb,caijieming-baidu/rocksdb,skunkwerks/rocksdb,wat-ze-hex/rocksdb,kaschaeffer/rocksdb,wlqGit/rocksdb,vmx/rocksdb,bbiao/rocksdb,tsheasha/rocksdb,JohnPJenkins/rocksdb,wskplho/rocksdb,zhangpng/rocksdb,norton/rocksdb,dkorolev/rocksdb,luckywhu/rocksdb,norton/rocksdb,biddyweb/rocksdb,vmx/rocksdb,norton/rocksdb,vmx/rocksdb,jalexanderqed/rocksdb,mbarbon/rocksdb,tschottdorf/rocksdb,SunguckLee/RocksDB,geraldoandradee/rocksdb,tschottdorf/rocksdb,makelivedotnet/rocksdb,skunkwerks/rocksdb,bbiao/rocksdb,biddyweb/rocksdb,geraldoandradee/rocksdb,NickCis/rocksdb,IMCG/RcoksDB,ylong/rocksdb,makelivedotnet/rocksdb,Applied-Duality/rocksdb,luckywhu/rocksdb,ylong/rocksdb,jalexanderqed/rocksdb,lgscofield/rocksdb,siddhartharay007/rocksdb,fengshao0907/rocksdb,Applied-Duality/rocksdb,JohnPJenkins/rocksdb,Vaisman/rocksdb,alihalabyah/rocksdb,msb-at-yahoo/rocksdb,sorphi/rocksdb,facebook/rocksdb,caijieming-baidu/rocksdb,anagav/rocksdb,vashstorm/rocksdb,wat-ze-hex/rocksdb,sorphi/rocksdb,wat-ze-hex/rocksdb,zhangpng/rocksdb,vmx/rocksdb,kaschaeffer/rocksdb,JoeWoo/rocksdb,flabby/rocksdb,makelivedotnet/rocksdb,wlqGit/rocksdb,virtdb/rocksdb,facebook/rocksdb,skunkwerks/rocksdb,luckywhu/rocksdb,JohnPJenkins/rocksdb,hobinyoon/rocksdb,JackLian/rocksdb,wskplho/rocksdb,caijieming-baidu/rocksdb,mbarbon/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,flabby/rocksdb,siddhartharay007/rocksdb,sorphi/rocksdb,biddyweb/rocksdb,skunkwerks/rocksdb,dkorolev/rocksdb,fengshao0907/rocksdb,rDSN-Projects/rocksdb.replicated,amyvmiwei/rocksdb,sorphi/rocksdb,alihalabyah/rocksdb,rDSN-Projects/rocksdb.replicated,vashstorm/rocksdb,kaschaeffer/rocksdb,lgscofield/rocksdb,msb-at-yahoo/rocksdb,biddyweb/rocksdb,makelivedotnet/rocksdb,vashstorm/rocksdb,lgscofield/rocksdb,JackLian/rocksdb,vashstorm/rocksdb,lgscofield/rocksdb,tizzybec/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,zhangpng/rocksdb,temicai/rocksdb,tschottdorf/rocksdb,facebook/rocksdb,RyanTech/rocksdb,ryneli/rocksdb,fengshao0907/rocksdb,SunguckLee/RocksDB,amyvmiwei/rocksdb,JoeWoo/rocksdb,facebook/rocksdb,mbarbon/rocksdb,tizzybec/rocksdb,ylong/rocksdb,rDSN-Projects/rocksdb.replicated,ryneli/rocksdb,biddyweb/rocksdb,virtdb/rocksdb,Applied-Duality/rocksdb,amyvmiwei/rocksdb,Vaisman/rocksdb,luckywhu/rocksdb,wlqGit/rocksdb,SunguckLee/RocksDB,wenduo/rocksdb,Vaisman/rocksdb,rDSN-Projects/rocksdb.replicated,NickCis/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,mbarbon/rocksdb,RyanTech/rocksdb,temicai/rocksdb,alihalabyah/rocksdb,JoeWoo/rocksdb,bbiao/rocksdb,Vaisman/rocksdb,lgscofield/rocksdb,tizzybec/rocksdb,alihalabyah/rocksdb,tschottdorf/rocksdb,mbarbon/rocksdb,facebook/rocksdb,OverlordQ/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,caijieming-baidu/rocksdb,temicai/rocksdb,dkorolev/rocksdb,virtdb/rocksdb,Vaisman/rocksdb,dkorolev/rocksdb,anagav/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,fengshao0907/rocksdb,msb-at-yahoo/rocksdb,rDSN-Projects/rocksdb.replicated,hobinyoon/rocksdb,fengshao0907/rocksdb,norton/rocksdb,Andymic/rocksdb,anagav/rocksdb,siddhartharay007/rocksdb,Applied-Duality/rocksdb,luckywhu/rocksdb,msb-at-yahoo/rocksdb,Andymic/rocksdb,virtdb/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,msb-at-yahoo/rocksdb,rDSN-Projects/rocksdb.replicated,wskplho/rocksdb,tsheasha/rocksdb,JackLian/rocksdb,flabby/rocksdb,makelivedotnet/rocksdb,tsheasha/rocksdb,OverlordQ/rocksdb,Applied-Duality/rocksdb,wlqGit/rocksdb,wenduo/rocksdb,virtdb/rocksdb,ylong/rocksdb,IMCG/RcoksDB,facebook/rocksdb,hobinyoon/rocksdb,virtdb/rocksdb,siddhartharay007/rocksdb,IMCG/RcoksDB,wenduo/rocksdb,wskplho/rocksdb,ylong/rocksdb,temicai/rocksdb,alihalabyah/rocksdb,IMCG/RcoksDB,wat-ze-hex/rocksdb,norton/rocksdb,flabby/rocksdb,ryneli/rocksdb,amyvmiwei/rocksdb,skunkwerks/rocksdb,lgscofield/rocksdb,tizzybec/rocksdb,mbarbon/rocksdb,OverlordQ/rocksdb,msb-at-yahoo/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,kaschaeffer/rocksdb,JoeWoo/rocksdb,JohnPJenkins/rocksdb,SunguckLee/RocksDB,wlqGit/rocksdb,sorphi/rocksdb,sorphi/rocksdb,siddhartharay007/rocksdb,temicai/rocksdb,wskplho/rocksdb,anagav/rocksdb,NickCis/rocksdb,RyanTech/rocksdb,zhangpng/rocksdb,Vaisman/rocksdb,JohnPJenkins/rocksdb,geraldoandradee/rocksdb,RyanTech/rocksdb,NickCis/rocksdb,mbarbon/rocksdb,vashstorm/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,ylong/rocksdb,luckywhu/rocksdb,bbiao/rocksdb,NickCis/rocksdb,bbiao/rocksdb,wat-ze-hex/rocksdb,jalexanderqed/rocksdb,anagav/rocksdb,vashstorm/rocksdb,ryneli/rocksdb,JackLian/rocksdb,Andymic/rocksdb,anagav/rocksdb,hobinyoon/rocksdb,wenduo/rocksdb,ryneli/rocksdb,ylong/rocksdb,wlqGit/rocksdb,tschottdorf/rocksdb,OverlordQ/rocksdb,zhangpng/rocksdb,makelivedotnet/rocksdb,JackLian/rocksdb,RyanTech/rocksdb,hobinyoon/rocksdb,ryneli/rocksdb,caijieming-baidu/rocksdb,tsheasha/rocksdb,JoeWoo/rocksdb,wskplho/rocksdb,tsheasha/rocksdb,wenduo/rocksdb,RyanTech/rocksdb,skunkwerks/rocksdb,OverlordQ/rocksdb,siddhartharay007/rocksdb,flabby/rocksdb,Applied-Duality/rocksdb,NickCis/rocksdb,makelivedotnet/rocksdb,dkorolev/rocksdb,caijieming-baidu/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,IMCG/RcoksDB,temicai/rocksdb,RyanTech/rocksdb,fengshao0907/rocksdb,vmx/rocksdb,JackLian/rocksdb,Andymic/rocksdb,IMCG/RcoksDB,geraldoandradee/rocksdb,caijieming-baidu/rocksdb,hobinyoon/rocksdb,tizzybec/rocksdb,zhangpng/rocksdb,tizzybec/rocksdb,JoeWoo/rocksdb,Andymic/rocksdb,wat-ze-hex/rocksdb,alihalabyah/rocksdb,biddyweb/rocksdb,alihalabyah/rocksdb,lgscofield/rocksdb,skunkwerks/rocksdb,amyvmiwei/rocksdb,SunguckLee/RocksDB,Applied-Duality/rocksdb,jalexanderqed/rocksdb,wenduo/rocksdb,amyvmiwei/rocksdb,fengshao0907/rocksdb,OverlordQ/rocksdb,zhangpng/rocksdb,rDSN-Projects/rocksdb.replicated,anagav/rocksdb,JackLian/rocksdb,tsheasha/rocksdb,bbiao/rocksdb,dkorolev/rocksdb,facebook/rocksdb,dkorolev/rocksdb,geraldoandradee/rocksdb,vmx/rocksdb,kaschaeffer/rocksdb,JohnPJenkins/rocksdb,siddhartharay007/rocksdb,wenduo/rocksdb,JohnPJenkins/rocksdb,geraldoandradee/rocksdb,tizzybec/rocksdb,facebook/rocksdb,wenduo/rocksdb,sorphi/rocksdb,JoeWoo/rocksdb