Add utility riak_array
- Also run integration tests only when command-line argument is specified
Cleanup compiler type warning
Merge branch 'develop' into feature/bch/add-riak_array
riak_print.h is missing after a `make install`
Change `riak_array_new` to return `riak_error`
Fix EVENT_LIBS for async example
Improvements suggested by @metadave
- Return riak_error for all calls
- Improve the testing comments
- Add riak_array_sort()
Clean up return code comments for riak_array_*
Merge pull request #65 from basho/feature/bch/add-riak_array

Add utility riak_array