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ARROW-1008: [C++] Add abstract stream writer and reader C++ APIs. Give clearer names to IPC reader/writer classes

The main motivation for this patch was to make `StreamReader` and `StreamWriter` abstract, so that other implementations can be created. I would also like to add the option for asynchronous reading and writing.

I also added a CMake option `ARROW_NO_DEPRECATED_API` for more graceful name deprecations.

@kou do you think these names for the IPC classes are more clear?

Author: Wes McKinney <wes.mckinney@twosigma.com>

Closes #679 from wesm/ARROW-1008 and squashes the following commits:

d7b7c9ce [Wes McKinney] Add missing dtors for pimpl pattern
a797ee3e [Wes McKinney] Fix glib
04fa2854 [Wes McKinney] Feedback on ipc reader/writer names. Add open_stream/open_file Python APIs
22346d47 [Wes McKinney] Fix unit tests
10837a65 [Wes McKinney] Add abstract stream writer and reader C++ APIs. Rename record batch stream reader and writer classes for better clarity