[Python] Add support for pickling to buffers and arrays

[asfimport]

Reporter: Uwe Korn / @xhochy
Assignee: Uwe Korn / @xhochy

Related issues:

• [Python] Implement pickling for Column, ChunkedArray, RecordBatch, Table (is part of)

PRs and other links:

• GitHub Pull Request #1928

_{Note: This issue was originally created as ARROW-2493. Please see the migration documentation for further details.}

[asfimport]

Uwe Korn / @xhochy:
Issue resolved by pull request 1928
#1928