changes to support non blocking behavior

- updated unit test that no longer worked with new Scheduler implementation

- open questions on this class

- they have outgrown the inner class model
- I have made many things package accessible to make tests work
- several are still breaking because they are accessing private members and I have not decided how to handle them

- all unit tests compiling
-  not all are passing as the RxJava 0.17 upgrade is still in process

RxJava 0.17 handles synchronous Subscriptions now so this code needed to be changed otherwise the exceptions never got thrown since the isUnsubscribed() would already be true.

Deriving the full class names for these inner classes was being done wrong and resulted in bad class names when the unit tests got moved.

This reveals the bugs in the current HystrixNonBlockingCommand implementation.

- unit tests are all passing with both async and sync Observables
- defaults to semaphore isolation but allows thread isolation if an Observable source is synchronous

Whoops.

- Use "Operator" name as that's what it is.
- Use HystrixObservableTimeoutOperator instead of TimeoutOperator so in a stacktrace it's clear it's the Hystrix variant and not the normal RxJava TimeoutOperator.

- all unit tests are now passing with semaphore and thread isolation

See #212

Update tests to assert isExecutedInThread true/false so we are sure the tests are getting what they expect.

Eliminate the AbstractHystrixCommand inheritance.

... breaks things (thought nothing would implement this interface, but alas some things do).

Fixes issue reported in #212
This was also fixed in 1.3.10

…-merge

Conflicts:
	hystrix-core/build.gradle
	hystrix-core/src/main/java/com/netflix/hystrix/HystrixCollapser.java
	hystrix-core/src/main/java/com/netflix/hystrix/HystrixCommand.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/HystrixPlugins.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/concurrency/HystrixConcurrencyStrategy.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/concurrency/HystrixContexSchedulerAction.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/concurrency/HystrixContextCallable.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/concurrency/HystrixContextRunnable.java
	hystrix-core/src/main/java/com/netflix/hystrix/strategy/concurrency/HystrixContextScheduler.java

Wait until onComplete before emitting the results so that all metrics, event logs, etc are done.