* Fixes drizzled's atomics:
- fetch_and_add() was actually add_and_fetch() - fixed to have both methods correct
- compare_and_swap() was incorrect for all traits classes. Fixed to return a bool
true only when the supplied value is actually swapped
- fixes increment() and decrement() methods and operator+=() in outer atomics class
template to call proper add_and_fetch() methods on traits classes
- Now that above are fixed, removed the hacks in Query_id and TransactionLog to
have query ID and the new transactoin ID start properly at 1.
* Transaction messages sent over replication stream now use
a real transaction ID, managed by drizzled::TransactionServices. Previously,
the Query_id was being used, resulting in SELECT statements incrementing the
transaction ID.
* Added a test case to ensure that DDL ops are given a transaction ID and SELECT
ops do not increment the transaction ID.
The transaction ID will be paired with a channel ID to become the global
transaction identifier. ReplicationServices will manage the pairing of
channel and transaction ID and understand how far a particular subscriber
node has applied.