adding c* 1.2 client SSL support to a6x.
Merge branch 'master' of github.com:Netflix/astyanax
First pass at a cassandra based task scheduler using the message queue
recipe.
Disable scheduler test
Verify uniquess when creating new tasks
revamped the API for entity store: deprecated old APIs; created new EntityPersister as the main simplified API
https://github.com/Netflix/astyanax/issues/153
backup
Fix FilteringHostSupplier to return the source list if the filter result is empty for any reason
Threading cleanup

Have all SimpleHostConnectionPool instances use the same scheduled
executor to reduce number of threads being created, default is 5
threads.  Have maintainance tasks share the same executor as well.
override equals() and toString() methods
minor fix of missing id setting
removed bit masking for type conversion. it is unnecessary (and also wrong for short type)
added new ByteSerializer
updated ByteSerializer to model it after existing ShortSerializer
extended column API with byte, short, and float types
Merge pull request #158 from stevenzwu/moretypes

extended column API with byte, short, and float types (HEAD, moretypes)
Return messageId string representing the queue column so it can be
deleted.
Timeout on reading message from the queue in the consumer
Peek N messages, without taking a lock.
Read any message.
Delete messages using the messageId
Fix ordering for priority
Fix priority timeout having to be reduced to lowest priority
Fix unit test
Fix unit test