travis build fixes
travis build fixes

flabby/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,SunguckLee/RocksDB,tsheasha/rocksdb,wenduo/rocksdb,SunguckLee/RocksDB,bbiao/rocksdb,hobinyoon/rocksdb,jalexanderqed/rocksdb,jalexanderqed/rocksdb,norton/rocksdb,vmx/rocksdb,hobinyoon/rocksdb,vmx/rocksdb,wat-ze-hex/rocksdb,SunguckLee/RocksDB,wat-ze-hex/rocksdb,wenduo/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,wat-ze-hex/rocksdb,norton/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,bbiao/rocksdb,Andymic/rocksdb,flabby/rocksdb,wenduo/rocksdb,Andymic/rocksdb,jalexanderqed/rocksdb,Andymic/rocksdb,wenduo/rocksdb,norton/rocksdb,tsheasha/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,vmx/rocksdb,ryneli/rocksdb,Andymic/rocksdb,flabby/rocksdb,jalexanderqed/rocksdb,flabby/rocksdb,facebook/rocksdb,OverlordQ/rocksdb,wat-ze-hex/rocksdb,OverlordQ/rocksdb,facebook/rocksdb,bbiao/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,bbiao/rocksdb,vmx/rocksdb,ryneli/rocksdb,vmx/rocksdb,hobinyoon/rocksdb,flabby/rocksdb,jalexanderqed/rocksdb,norton/rocksdb,bbiao/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,OverlordQ/rocksdb,jalexanderqed/rocksdb,wenduo/rocksdb,wat-ze-hex/rocksdb,SunguckLee/RocksDB,OverlordQ/rocksdb,wenduo/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,bbiao/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,tsheasha/rocksdb,bbiao/rocksdb,bbiao/rocksdb,ryneli/rocksdb,SunguckLee/RocksDB,wenduo/rocksdb,norton/rocksdb,norton/rocksdb,Andymic/rocksdb,ryneli/rocksdb,wenduo/rocksdb,norton/rocksdb,ryneli/rocksdb,tsheasha/rocksdb,facebook/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,facebook/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,hobinyoon/rocksdb,facebook/rocksdb,ryneli/rocksdb,facebook/rocksdb,OverlordQ/rocksdb,wat-ze-hex/rocksdb,wat-ze-hex/rocksdb,tsheasha/rocksdb,OverlordQ/rocksdb,vmx/rocksdb,Andymic/rocksdb,flabby/rocksdb,vmx/rocksdb,facebook/rocksdb