Final update to release notes to call out new performance test

        * Execute a Get operation to retrieve a key/value entry

    * `./bin/kinetic-c-util delete`

        * Execute a Delete operation to destroy a key/value entry

    * `./bin/kinetic-c-util instanterase`

    * `./bin/kinetic-c-util instanterase` *INCOMPLETE*

        * Execute an InstantSecureErase operation to erase ALL content from the device

Kinetic C Client I/O Examples

* Switched internal message infrastructure to use a threadpool. This will allow for a much higher number active connections and outstanding commands.

* KineticClient_Init now returns a KineticClient pointer (internally, it's a handle to the threadpool) that must be passed to KineticClient_CreateConnection() in order to create new connections and must also be passed to KineticClient_Shutdown() on shutdown

* Improved I/O examples to demonstrate client write operations for blocking/non-blocking (asynchrounous) and single/multi-threaded.

* Added consolidated performance test which reports metrics on PUT/GET/DELETE seqeunces (test/system/test_system_async_throughput.c).

v0.9.2 (kinetic-protocol 3.0.5)

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