fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

sdong fdf882ded2 Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 An error occurred ) ... Summary: When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433 Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag. Differential Revision: D19977691 fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e		5 years ago
..
backupable_db.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 An error occurred )	5 years ago
backupable_db_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433 An error occurred )	5 years ago