a247617e6f
Summary: Add Java-side copy constructors for: - Options - DBOptions - ColumnFamilyOptions - WriteOptions along with unit tests to assert the copy worked. NOTE: Unit tests are failing in travis but it looks like a global timeout issue. These tests pass. Closes https://github.com/facebook/rocksdb/pull/3450 Differential Revision: D6874425 Pulled By: sagar0 fbshipit-source-id: 5bde68ea5b5225e071faea2628bf8bbf10bd65ab