[C++] Portable alternative to PyDate_to_ms function

[asfimport]

This function's implementation is not portable to Visual Studio

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

Related issues:

• Arrow 0.3 release (blocks)
• [Python] Support for pyarrow on Windows / MSVC (relates to)

_{Note: This issue was originally created as ARROW-839. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
PR: #559

[asfimport]

Uwe Korn / @xhochy:
Issue resolved by pull request 559
#559