[Python] Create buffer from address, size and base

[asfimport]

Given a memory address and a size, we should be able to construct an Arrow buffer from this. The additional base object will be used to hold a reference to the underlying, original buffer so that it does not go out of scope before the Arrow buffer.

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

Related issues:

• [Java/Python] in-process vector sharing from Java to Python (blocks)

PRs and other links:

• GitHub Pull Request apache/arrow#1693

_{Note: This issue was originally created as ARROW-2252. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 1693
#1693