Library Version 18.1.40

New Replication Environment Region Objects
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## New Replication Environment Region Objects

New object types are now added to `DB_ENV->set_memory_init`, allowing a user to account for replication's environment region memory needs.

### New Parameters

- `DB_MEM_DATABASE`

  Initialize the number of databases in the environment.

- `DB_MEM_DATABASE_LENGTH`

  Initialize the maximum combined length of a database's directory and name strings.

- `DB_MEM_EXTFILE_DATABASE`

  Initialize the number of databases and subdatabases using external files.

- `DB_MEM_REP_SITE`

  Initialize the maximum number of sites in the replication group.

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