Fatal logging statements in plasma store no longer print backtraces.

[robertnishihara]

The plasma store recently switched from the LOG_FATAL macro to ARROW_FATAL. The change was done in #579.

The LOG_FATAL macro: https://github.com/ray-project/ray/blob/master/src/common/common.h#L91

ARROW_LOG(FATAL) is implemented here https://github.com/ray-project/ray/blob/master/src/plasma/logging.h#L95.

Some differences, which we may want to address.

• LOG_FATAL prints a backtrace, which makes debugging easier.
• LOG_FATAL exits with abort() (as opposed to exit()) so as to produce a core dump.
• LOG_FATAL prints the word FATAL in the logging message, which makes the log file easier to read/search.

[robertnishihara]

We may be able to fix this by compiling Arrow with the -DARROW_EXTRA_ERROR_CONTEXT=ON flag.

see https://issues.apache.org/jira/browse/ARROW-1401