[C++] Implement IPC round trip for DictionaryArray, dictionaries shared across record batches

[asfimport]

Reporter: Wes McKinney / @wesm
Assignee: Wes McKinney / @wesm

Related issues:

• [C++] Implement dictionary-encoded array container (depends upon)

_{Note: This issue was originally created as ARROW-459. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
PR: #347

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 347
#347