EnvWrapper: add ReuseWritableFile
EnvWrapper: add ReuseWritableFile

This was missed when ReuseWritableFile was added to Env in
1bcafb62f4aa7c0b2b3786a958220411347f27b8.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@redhat.com>

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