[C++] Add static ctor ArrayData::Make for nicer syntax in places

[asfimport]

Because of the fickleness of std::make_shared, we are having to store a vector of buffers in an lvalue rather than passing the buffers in the make_shared function call as an initializer list. This makes things a bit awkward, and could be made possibly better with a factory function

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

PRs and other links:

• GitHub Pull Request #1353

_{Note: This issue was originally created as ARROW-1777. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 1353
#1353