[C++] Add IPC tests for date/time types

[asfimport]

I don't believe this are being directly tested right now. Follow up to ARROW-33

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

Related issues:

• Add integration tests for date and time types (blocks)

_{Note: This issue was originally created as ARROW-534. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
PR: #371. If we use different byte widths for different time resolutions (per ARROW-617) we'll need to do some follow up work

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 371
#371